This lesson is ready to go, with no prep. Find, in terms of , the volume of a sphere of radius 1 2 1 cm. All our math worksheets are aligned to the. Surface Area and Volume. Stuck? Review related articles/videos or use a hint. This resource includes: -1 foldable graphic organizer -2 versions (one with formulas and shape pictures and one without. 14 3. Detailed Description for All Surface Area & Volume Worksheets. your answer by finding the volume of a sphere with r 5 2a and comparing it to the volume of a sphere with r 5 a. Round your answers to the nearest hundredth, if necessary. Volumes of Spheres, Pyramids and Cones KS4 Walkthrough Worksheet. 8 m 6 m. They are also excellent for one-to-one tuition and for interventions. 28 Search Results for Volume. 13608 cubic inches. Round your answers to the nearest. Let V 1 and V 2 be the volumes of two spheres. Volume of a frustum A frustum of a cone or pyramid is formed by cutting the top of a cone or pyramid. Calculate the volume of a sphere of radius 12 \; cm. Our Surface Area & Volume Worksheets are free to download, easy to use, and very flexible. (Remember to include the relevant cubic unit in your answer) diameter = 4 cm. This Surface Area and Volume Worksheet will produce problems for calculating surface area and volume for spheres. You may select the units of measurement for each. Hi, I'm Rob. Finding Volume of Spheres – Example 3: Find the volume of a sphere whose radius is \(2 ft\). Take the hassle out of finding the volume of spheres and hemispheres with this compilation of pdf worksheets. Previous Sequences Patterns Practice Questions. 1) 2 mi 2) 22 km 3) 8 in 4) 4. Name : Score : Printable Math Worksheets @ www. Volumes of Spheres, Pyramids and Cones KS4 Walkthrough Worksheet. The basic worksheets include whole number measurements for radii and require students to round . Author: Toby Farahmand. The second page then provides some spheres. Building on prior knowledge - finding the area of polygons, finding the area of a circle, finding the volume or prisms - the worksheet is downloaded as PDF (for ease of printing) and interactive files, meaning your students can work through the questions physically or digitally. This worksheet is perfect for low ability/SEN students. Find the volume of the following figures. Building on prior knowledge - finding the area of polygons, finding the area of a circle, finding the volume or prisms - the worksheet is downloaded as PDF (for ease of printing) and interactive files, meaning your students can work through the questions physically or digitally. 14 for π and round your final answer to the nearest hundredth. Volume of a Cylinder Worksheets. The volume of a sphere and hemisphere worksheets meticulously created for 8th grade and high school students help them learn the know-how of calculating the volume of spheres with a set of practice exercises. Quizizz is a powerful online platform that enables teachers to create interactive worksheets for their students. These Free Volumes Of Cones Cylinders And Spheres. 9 in 21. Finding Volume Of A Sphere Worksheet Pdf. Sample Class 9 Sphere Worksheet Questions. Worksheet by Kuta Software LLC Geometry Volume of Spheres Name_____ ID: 1 Date_____ Period____ Find the volume of each figure. Worksheet by Kuta Software LLC-3-Answers to Volume of Cylinders, Cones and Spheres (ID: 1) 1) 58. This humongous collection of printable volume worksheets is sure to walk middle and high school students step-by-step through a variety of exercises beginning with counting cubes, moving on to finding the volume of solid shapes such as cubes, cones, rectangular and triangular prisms and pyramids, cylinders, spheres and hemispheres, L-blocks, and mixed shapes. Secure learners will be able to find a missing length in a sphere given its volume. Give your answer to 3 3 significant figures. Played 0 times. 5 cm 3 in. 5 for r. All three worksheets come as a Printable PDF and include three corresponding Easel Digital Activities. It goes through a typical calculator and a typical non-calculator question. 15 Explain Explain what pr2 and h represent in terms of the cylinder. by Sarah_Sophia. Camera FV-5 Pro v3. The formula for the volume of a cylinder is pi*r^2*h. These Free Volumes Of Cones Cylinders And Spheres. This geometric . Volume of a Sphere (Radius Given) Worksheet 3 – This worksheet features images of 12 spheres. entrance exam for bba colleges / volume of cones spheres and cylinders worksheet kuta software answers / necessary insurance chapter 9 lesson 6 answer key / volume of cylinders cones and spheres worksheet pre algebra answers / ielts writing sample answer band 7 / math nation geometry answer key section 1 topic 6 / personal hygiene multiple. Find the volume of the ice cream cone. Surface Area of Spheres and Hemispheres Worksheets. of the sphere. Round your answer to two decimal. Lisa Davenport. Displaying all worksheets related to - Volume Of Spheres. c) Find the total surface area. The radius or diameter of each sphere is provided, and you must round the volume to. + Excellent teaching slides. (114) $3. • You must show all your working out. Showing top 8 worksheets in the category - Volume Sphere. Resurrect your surface area of a cone practice with these introductory worksheets featuring radius and height! Substitute the given values in the formula SA = πr 2 + πrl to find the surface area of each cone. The advanced worksheets have decimal measurements for radii and require students to round to the nearest hundredth. Report a problem. • Answer the Questions in the spaces provided – there may be more space than you need. !Calculate the percentage of the tube that is not filled. From there, we’ll tackle trickier objects, such as cones and spheres. Plug in the value in the formula V = 4/3 π r 3 and compute the volume of the spheres. O Worksheet by Kuta Software LLC Kuta Software - Infinite Pre-Algebra Name_____ Volumes of Solids Date_____ Period____. Question 5: The composite shape below was made by attaching a hemisphere (half of a sphere) to the top of a cylinder. Grab our volume of spheres worksheets to find the volume of solid shapes with parameters in integers and decimals. Find the volume of each rectangular prism by multiplying the area of the ‘base’ times the length the base has been extended. by Sarah_Sophia. Geometry Worksheets - Volume of Sphere. ©I E220 41F2 N VKju1t eaD lS docfSt yw4a zr0e d xLoLJC Y. 1 Browse Printable Volume of a Sphere Worksheets. Find the Surface Area and Volume of a Sphere Worksheet. 7th and 8th Grades View PDF Calculate Volumes of Spheres Students are given the radius of none different spheres. What would be the volume of water it would contain?. Author: Toby Farahmand. Explain your reasoning. !Three spheres of radius 4cm fit inside a tube. c) Find the volume. r is the radius of the circular end of the cylinder. 2 in 5) 14. Building on prior knowledge - finding the area of polygons, finding the area of a circle, finding the volume or prisms - the worksheet is downloaded as PDF (for ease of printing) and interactive files, meaning your students can work through the questions physically or digitally. The radius of each sphere is provided, and you must round the . The volume would double. This lesson follows on from volume of prisms. Volume of a Sphere. 14)(12 ) (11 )2 3 mm = 1657. Apakah Sobat mau mencari bacaan seputar Finding Volume Of A Sphere Worksheet Pdf namun belum ketemu? Pas sekali pada kesempatan kali ini pengurus web akan membahas artikel, dokumen ataupun file tentang Finding Volume Of A Sphere Worksheet Pdf yang sedang kamu cari saat ini dengan. Calculate the volume of a sphere with radius 6 \; cm 6 cm. QUIZ (Volume of Cylinders, Cones, and Spheres) Volume Worksheets, Angles Worksheet. Volume of a Sphere (Radius Given) Worksheet 3 – This worksheet features images of 12 spheres. Multiply these together, and you get l²w²h²= (lwh)²=V². The task is for students to find the radius of the sphere using the. Once you find your worksheet, click on pop-out icon or print icon to worksheet to print or download. Start for free now!. This lesson is ready to go, with no prep required. Calculate the volumes of the cylinders. Students also learn that the formula for the volume of a sphere is 4/3 times pi times radius cubed, and the formula for the volume of a cone is 1/3 times pi times radius squared times height. How many cones fit into the cylinder? 4. So, the volume of a hemisphere is calculated using the formula, Volume of hemisphere = 2πr 3 /3. 4 Premium Full Version Terbaru; Web Bbm For Pc. For example, if the radius of a sphere is 4cm, we would substitute the value 4 in for r. Volume - To find the volume of the sphere, we use the following formula: V= 4/3 x π x r 3 Where, π (constant) is 3. Therefore, the radius of the given circle is 11. !Three spheres of radius 4cm fit inside a tube. • Answer all Questions. ©7 R2m0J1 a2N LK qu Etia z ZS Zo nf gtPwyakr ie0 GLmLECa. Question 1: Find the volume of each of these spheres. A cube of side 4 cm contains a sphere touching its sides. The volume would be multiplied by 12. 13608 cubic inches. 8th grade. You may select the units of measurement for each problem. 7th and 8th Grades. Oregon School District / Homepage. Also it covers how to fin. Browse Printable Volume of a Cylinder Worksheets. Know the formulas for the volumes of cones, cylinders, and spheres and use them to solve real-world and mathematical problems. according to the volume of a sphere proof. Find the volume of the cylinder. = 256 — 3 π Simplify. Find out the volume of a cube with the dimensions 2 m × 3 m × 6 m. pdf, 184. These solid shapes are very tricky, so students will need to count carefully. Find the ratio of their surface areas. It is a cubic measurement and does not apply to two-dimensional objects such as circles. Multiply these together, and you get l²w²h²= (lwh)²=V². The Earth is the common example of a hemispher. Round answers to 2 decimal places where necessary. 1 9. Once you find your worksheet, click on pop-out icon or print icon to worksheet to print or download. Volume Cubes - Advanced. Spheres Date_____ Period____ Find the surface area of each figure. This math worksheet was created on 2015-03. Either enter an exact answer in terms of π or use 3. Building on prior knowledge - finding the area of polygons, finding the area of a circle, finding the volume or prisms - the worksheet is downloaded as PDF (for ease of printing) and interactive files, meaning your students can work through the questions physically or digitally. If a cone has radius of 4 inches and a volume of 151 cubic inches, what is its approximate height? 9 inches. Determine the number of cubic units for each shape. Volume of a Conical Frustum. A globe is an example of a sphere. To find the formula of a cylinder, we use the formula. V sphere = 4 3 π r 3. By the time he eats all the "snow" off the top, the paper cone is filled with 27 π cm 3 of melted purple liquid. The volume would be multiplied by 6. Worksheets are Volume, Spheres date period, Volumes of solids, Volume, Mathvine, Surface area and volume. Get Started. Volume of Solids Worksheet Pages 1-2: Solids include: Prisms, Cylinders, Cones, Pyramids and Spheres; 12 Problems total Pages 3-4: Answer KeyA nice worksheet that can be used for in class review, as homework, or an assessment. Find the volume of a square pyramid with a height of 3 cm and a side length of 2 cm. Students will also see problems that require them to work backwards and find missing dimensions of each of the figures. 0% average accuracy. All questions/tasks are supported with the correct answers (with workings out). All solutions given on PPT and in worksheet . To calculate the volume of a. Finding the Volume of Spheres. Start for free now!. The practice problems here depict either the diameter or the radius of the sphere. Volume of a Sphere (Radius Given) Worksheet 1 – This worksheet features images of 12 spheres. Showing top 8 worksheets in the category - Volume Of Spheres. Write your answer to 1 1 decimal place. Worksheet 3 – Volume of a Frustum 1. Calculate the volume of a sphere with radius 6 \; cm 6 cm. Camera FV-5 Pro v3. 2 m 280. \rThe total height of the toy is 22 cm. ID: 1350276. \rWork out the volume of the toy. Welcome to Math Antics! In this. Volume of a Sphere Practice Question How to Calculate Volume of Sphere? Check with the radius of the given sphere. \rWork out the volume of the toy. These Surface Area & Volume Worksheets are a great resource for children in 5th, 6th Grade, 7th Grade, and 8th Grade. ” Hemispheres are everywhere. Resurrect your surface area of a cone practice with these introductory worksheets featuring radius and height! Substitute the given values in the formula SA = πr 2 + πrl to find the surface area of each cone. Milliliters - Liters. Gain immense practice with a wide range of exercises involving integers and decimals. Find the volume of the frustum. Surface Area and Volume. 1 Graphing Quadratics Worksheet Answers. Calculate the volume of the ball. Learn how to deduce its formula and determine the volume of the sphere using examples. Maths worksheets Created Date:. The volume is about 2144. Maths worksheets Created Date:. entrance exam for bba colleges / volume of cones spheres and cylinders worksheet kuta software answers / necessary insurance chapter 9 lesson 6 answer key / volume of cylinders cones and spheres worksheet pre algebra answers / ielts writing sample answer band 7 / math nation geometry answer key section 1 topic 6 / personal hygiene multiple. 2 Substitute the given values into the formula. Volume of a Sphere. This Surface Area and Volume Worksheet will produce problems for calculating surface area and volume for spheres. Finding the volume and surface area of a sphere. This lesson is ready to go, with no prep required. Then answer Exercises 29 and 30 for the volume of a sphere. This foldable provides 4 practice problems to teach or review how to calculate the volume of cylinders, cones, and spheres. (Don’t forget about the units!) Finding the Volume of Rectangular Prisms. We have fun and challenging surface area and volume pdf worksheets on a range of topics, including calculating the area and volume of a rectangular prisms and finding the volume and surface area of cones and spheres. Round your answer to two decimal. Explain your reasoning. 1 PDF. The volume of a right cylinder is 1614. This lesson follows on from volume of prisms. 5 ft Volume = 7) height = 20. The volume would be multiplied by 6. Volume of cylinders. volume =. Learn for free about math, art, computer programming, economics, physics. by maritesrsua07. These are ready-to-use. The Corbettmaths Textbook Exercise on Volume of a Sphere. Scaffolded Math and Science. Oregon School District / Homepage. This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. Each point on the surface of the sphere is at the same distance from its. Lisa Davenport. Take π = 3. ≈ 381. So to get the volume of your figure, multiply your three areas together and take the square root. Milliliters - Liters. \rThe cone and hemisphere each have radius 7 cm. 1 yd 8. Half a sphere is defined as a hemisphere. Eighth-grade learners can use this page as a study guide or hold onto it. Free preview - This well thought out worksheet has been structured to increase in difficulty gradually, beginning with scaffolded intro examples and building up to more challenging questions that get them thinking. Volume of a Sphere Worksheets, Geometry Worksheets for 4th grade, 5th grade and middle school. 8th Grade Worksheets - Solve real-world and mathematical problems involving volume of cylinders, cones and spheres. Step 4: At last, add the units to the final answer. Calculate the volume of the ball. Award winning educational materials designed to help kids succeed. Calculate the volume of a sphere with radius 6 \; cm 6 cm. A complete differentiated lesson on calculating the volume and surface area of pyramids, cones and spheres. volume =. There is also an extra credit question which asks. 7 cm³ 10) 16 in 2144. Half a sphere is defined as a hemisphere. 14 × (3) 3)/3 = 56. 487 cubic inches and the height is 10. The practice problems here depict either the diameter or the radius of the sphere. h 8 iM vaod 0eR Ew Yi8t5h 4 UIjnwfqiqnoi St9es G4e GoVmGestTrqym. 2 Substitute the given values into the formula. Calculate the length of BC, labelled x in the diagram. entrance exam for bba colleges / volume of cones spheres and cylinders worksheet kuta software answers / necessary insurance chapter 9 lesson 6 answer key / volume of cylinders cones and spheres worksheet pre algebra answers / ielts writing sample answer band 7 / math nation geometry answer key section 1 topic 6 / personal hygiene multiple. These Volume Worksheets are printable. Instructions and Help about volume of cylinders cones and spheres practice worksheet answers pdf form. Find the volume of a sphere whose radius is 12 mm. and volume. Browse Printable Volume of a Sphere Worksheets. Each point on the surface of the sphere is at the same distance from its center. Because soccer ball is in the shape of sphere, we can use the formula of volume of a sphere to find volume of the soccer ball. An engaging math escape room for finding and comparing volume and surface area of cones, cylinders and spheres. This lesson is ready to go, with no prep. 5md5b × Description: "This worksheet is designed to develop and strengthen children's knowledge in finding the volume of rectangular prisms in math. Stuck? Review related articles/videos or use a hint. Secure learners will be able to find a missing length in a sphere given its volume. If you fill the cone with water or other filling material, predict how many cones of water will fit into the cylinder. A sphere has a volume of 457. Displaying all worksheets related to - Volume Cones Spheres And Cylinders. 92 m3 y. Social networking services for youthful kids, which declare to. This set of 3 worksheets includes 8 multiple choice problems per worksheet. Option 1: This 9 question scavenger hunt provides students with practice using the formulas for volume of cylinders, cones, and spheres. (Remember to include. touch of luxure
Find Volume of Sphere. . Volume of spheres worksheet
Under the hood. Volume of Cylinders, Cones, and Spheres #1. radius = 10 ft. Worksheets are Volumes of cones cylinders and spheres independent, Volume of cones cylinders and spheres work, Volume cylinders cones and spheres, Work on volume of cones cylinders and spheres, Volume of cones cylinders. These are ready-to-use. All questions/tasks are supported with the correct answers (with workings out). Milliliters - Liters. The size of the PDF file is 64066 bytes. All questions/tasks are supported with the correct answers (with workings out). Volume Of Cones And Spheres. All questions/tasks are supported with the correct answers (with workings out). 12 cm. 2 m 7) 9 mi 8). ☀ Lihat Volume Of A Sphere Worksheet With Answers. Watch our video or lesson. Videos, worksheets, 5-a-day and much more. Use a calculator to work out the volume. 14 for pi. 7A Solve problems involving the volume of cylinders, cones, & spheres. 1 9. View Bundle. These worksheets focus on the specific topic of. 9 G-GMD. The Volume and Surface Area of Spheres (One Decimal Place) (A) Math Worksheet from the Measurement Worksheets Page at Math-Drills. Use the formula for this worksheet for finding the volume of the spheres is various measurement units. Q1: Work out the volume of the sphere, . Where, Π (constant) is taken as 3. The size of the PDF file is 64066 bytes. Once you find your. Displaying all worksheets related to - Volume Cones Spheres And Cylinders. Find the volume of the solid. Free practice worksheet to help students master finding the volume of a cone, cylinder, and sphere. Sketch and label the pyramid. 4: Find and apply volume of spheres and composites 12. Created by. Volume of a Cone (Advanced) At the top of this page is a model problem that shows students how to calculate the volume of a cone. Volume Of Sphere Worksheet. Free Geometry worksheets created with Infinite Geometry. This lesson follows on from volume of prisms. How to Find the Volume of Spheres? (+FREE Worksheet!) In this article, you will learn how to find volumes of Spheres in a few simple steps. Volume Worksheets Free and Printable. 7 in Volume = 5) radius = 12. The advanced worksheets have decimal measurements for radii and require students to round to the nearest hundredth. The sphere, with no flat surfaces has the formula 4πr 2. Level: Basic Volume of a Sphere With Example (Basic) FREE At the top is a sample problem that shows students how to calculate the volume of a sphere. This math worksheet was created on 2015-03. Now you are ready to create your Surface Area and Volume Worksheet by pressing the Create Button. Get Started. Complete more of Solid Figures worksheet using your formula sheet on calculating volume of prisms, cylinders, pyramids, cones, and spheres until you feel comfortable. 14 for π and round your final answer to the nearest hundredth. 15 Explain Explain what pr2 and h represent in terms of the cylinder. This is a fantastic bundle that includes everything you need to know about the volume of Cylinders, Cones, and Spheres across 21 in-depth pages. The total area that the surface of the sphere or hemisphere occupies is what grade 7, grade 8, and high school students are expected to determine in these printable worksheets. These are ready-to-use. Browse Printable Volume of a Sphere Worksheets. 4 Premium Full Version Terbaru; Web Bbm For Pc. radius = 10 ft. Step 2: Take the cube of the radius. Volume Cones Spheres And Cylinders. 7th and 8th Grades View PDF Calculate Volumes of Spheres Students are given the radius of none different spheres. Volume of a Sphere (Radius or Diameter Given) Worksheet 1 – This worksheet features images of 12 spheres. Year 5 Tr 3 Week 1- Volume of cubes and cuboids. We need to substitute the value of the radius r=6 r = 6 into the formula. Volume Cones Spheres And Cylinders. Tentunya dengan banyaknya pilihan apps akan membuat kita lebih mudah untuk mencari juga memilih apps yang kita sedang butuhkan, misalnya seperti Volume Of A Sphere Worksheet With Answers. Below are six problems for students to solve. Finding the volume and surface area of a sphere. A sphere has a volume of 457. pdf, 184. Volume of a Sphere Worksheets, Geometry Worksheets for 4th grade, 5th grade and middle school. 6 Surface Area and Volume of Spheres 521 ASTRONOMERS study the planets, stars, and solar system. Task high school students to work out the volume of the truncated cone by replacing the radii of the two bases 'r' and 'R' and the height 'h' in the volume of a conical frustum formula V= 1/3 π h (r 2 + rR + R 2) with the given values. Volume of a Sphere (Radius Given) Worksheet 2 – This worksheet features images of 12 spheres. A sphere is a round, three-dimensional figure. 5 for r. Take π = 3. Volume of Pyramids and Cones Date_____ Period____ Find the volume of each figure. Practice problems of the surface area of a sphere In this worksheet, we will practice using the formula for the surface area of a sphere in terms of its radius or diameter to find the sphere's area, radius,. (1) Find the mass of 200 steel spherical ball bearings, each of which has radius 0. Get the Volume of a Sphere Worksheet for FREE when you download today!. Social networking services for youthful kids, which declare to. com Name : Volume - Cylinder Decimals: ES1 B) A) Find the volume of. The Corbettmaths Practice Questions on the Volume of a Sphere. 5 yd 26. The radius of each sphere is provided, and you must round the . Example: A sphere has a radius of 5cm. It is a cubic measurement and does not apply to two-dimensional objects such as circles. c) Find the volume. 10) A spherical ball has a radius of 6 centimeter. Its radius at one end and the height are 8 cm and 14 cm respectively. Calculate the length of BC, labelled x in the diagram. Solution (11) A vessel is in the form of frustum of a cone. Based on Pythagorean Theorem, the formula for finding the slant height is l = √ (r 2 + h 2 ). Homework 2 - The formula of surface area = 4 Π r 2. Watch our video or lesson. 57001 cubic inches. The surface area is the total area of all of the faces that make up its surface. Use a calculator to work out the volume. com Find the exact volume of each shape. Practice calculating the volumes of spheres. 0% average accuracy. The practice problems here depict either the diameter or the radius of the sphere. The volume of a sphere = Volume of a cone + Volume of a cone. We can also change the subject of the formula to obtain the radius given the volume. e I TA plLl E Gr3iegnh wtsW Vrcens edr tvEe vdW. The Corbettmaths Practice Questions on the Volume of a Sphere. Surface Area & Volume Activity Bundle. Building on prior knowledge - finding the area of polygons, finding the area of a circle, finding the volume or prisms - the worksheet is downloaded as PDF (for ease of printing) and interactive files, meaning your students can work through the questions physically or digitally. What is the height of the cone?. Slope Guy. V Worksheet by Kuta Software LLC Find the volume of each figure. Plug in the value in the formula V = 4/3 π r 3 and compute the volume of the spheres. Includes reasoning and applied questions. A really great activity for allowing students to understand the concept of Prisms, Pyramids, Cylinders, Cones, and Spheres. This is a great resource for interactive notebooks. Students said Nathan Delagarza. This can be purchased a . The volume of a right cylinder is 1614. Showing top 8 worksheets in the category - Volume Of Cones Cylinders Spheres. 13) A cylinder with a radius of 8 yd and a height of 12 yd. 7 g/cm³. Homework Practice Worksheet. Volume of Sphere Formula with its Derivation. Volume = 1) Volume = 2) Volume = 3) Volume = 4) Volume = 5) Volume = 6) Volume = 7) Volume = 8) Volume = 9) Volume = Volume - Sphere & Hemisphere 12 m t 6 m 27 cm 30 in 18. This easy-to-use toolkit packed with pdf worksheets for 8th grade and high school students, to determine the volume of mixed shapes covers a great spectrum of exercises involving a variety of 3D shapes like: prisms and cylinders, cones and pyramids, spheres and hemispheres offering dimensions in integers and decimals with easy and moderate levels, classified based on the number range used. Sort by. 3 yd 913 yd³ 6) 6 m 9 m 5. Volumes of Spheres, Pyramids and Cones KS4 Walkthrough Worksheet. assignment_returnCourse Name:Lumos StepUp - SBAC Online Practice And . The formula for the volume of a sphere follows a similar. Each ready to use worksheet collection includes 10 activities and an answer guide. The Corbettmaths Practice Questions on the Volume of a Pyramid. b) Find the lateral area. . longview wa craigslist, jobs in watsonville, truma water pump parts, how many images for lora training, pittsburghcraigslistorg, roblox kpop clothes id, connecticut apartments for rent, african sex globe xxx, christ the king glen burnie, bbc dpporn, pornofree tv, dabi sneeze fic co8rr