Grade 8 Spheres Worksheet
A worksheet for 8th-grade students covering the properties, surface area, and volume of spheres.
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Grade 8 Spheres Worksheet
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. What is the formula for the volume of a sphere with radius 'r'?
V = πr²h
V = 4/3πr³
V = 2πrh
V = πr²
2. What is the formula for the surface area of a sphere with radius 'r'?
SA = 2πrh
SA = πr²
SA = 4πr²
SA = 1/2bh
3. A sphere is a perfectly round three-dimensional object in which every point on its surface is equidistant from its .
4. The distance from the center of a sphere to any point on its surface is called the .
5. The longest distance through a sphere, passing through its center, is called the .
6. A sphere has a radius of 6 cm. Calculate its volume. Use π ≈ 3.14. (Round your answer to two decimal places).
7. A spherical ball has a diameter of 10 inches. Calculate its surface area. Use π ≈ 3.14. (Round your answer to two decimal places).
8. All cross-sections of a sphere are circles.
True
False
9. A hemisphere is exactly half of a sphere.
True
False
10. If the volume of a sphere is 288π cubic units, what is its radius?
11. A spherical tank has a surface area of 196π square meters. What is the diameter of the tank?
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