Name
B.E.S.T. GEOMETRY
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11-5 Additional Practice
Volumes of Spheres
For Exercises 1–3, find the surface area of a sphere with the given radius or
diameter. Round to the nearest tenth as needed.
1. d = 8.2 ft
2. r = 9 cm
3. d = 2π m
For Exercises 4–9, find the volume of the sphere or hemisphere with the given
radius or diameter. Round to the nearest tenth as needed.
4. sphere, r = 15 in.
5. hemisphere, d = 3.4 yd
6. sphere, r = (
​​ __
​  34 ​)​​π mm
7. 3𝛑 in.
8.
9.
16 mm
8.6 cm
10. A spherical scoop of ice cream with a diameter of 8 cm is in
a cone 18 cm tall with a base diameter of 8 cm. If all the ice
cream melts into the cone, what percent of the cone will be
filled? Round to the nearest whole percent as needed.
8 cm
18 cm
11. Elijah says the volume of a hemisphere with a
diameter of 12 inches is 2,304π cubic inches. What
is Elijah’s error?
4 3
πr
3
4
= π(12)3
3
V=
= 2,304π
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