Grade 8 Math: Volume of a Sphere
Calculate the volume of spheres given their radius or diameter using the formula V = (4/3)πr³.
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Volume of a Sphere
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Read each question carefully and calculate the volume of the sphere. Use π ≈ 3.14 and round your answers to two decimal places where necessary. The formula for the volume of a sphere is V = (4/3)πr³.
1. A sphere has a radius of 6 cm. What is its volume?
2. Find the volume of a sphere with a diameter of 10 meters.
3. If a sphere has a radius of 3 cm, its volume is approximately cm³.
4. The formula for the volume of a sphere is V = .
5. What is the approximate volume of a sphere with a radius of 4 inches?
85.33 in³
268.08 in³
100.53 in³
201.06 in³
6. A spherical ball has a volume of 904.32 cm³. What is the radius of the ball? (Hint: Work backward using the formula and π ≈ 3.14)