Page 689 - Basic College Mathematics with Early Integers

666 C HAPTE R 9 I GEOMETRY

10. Find the volume only. 11. Find the volume only. 12. Find the volume only.
10 ft

6 ft 9 cm
15 m

5 cm
7 m

Solve. See Examples 1 through 4.

1
13. Find the volume of a cube with edges of 1 inches. 14. A water storage tank is in the shape of a cone with
3
the pointed end down. If the radius is 14 ft and the
depth of the tank is 15 ft, approximate the volume of
22
the tank in cubic feet. Use for p.
7

1a inches
14 ft

15 ft

15. Find the volume and surface area of a rectangular 16. Find the volume and surface area of a box in the
box 2 ft by 1.4 ft by 3 ft. shape of a cube that is 5 ft on each side.

17. A paperweight is in the shape of a square-based 18. A birdbath is made in the shape of a hemisphere
pyramid 20 centimeters tall. If an edge of the base is (half-sphere). If its radius is 10 inches, approximate its
12 centimeters, find the volume of the paperweight. 22
volume. Use for p.
7

10 in.

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19. Find the exact volume and surface area of a sphere 20. A tank is in the shape of a cylinder 8 feet tall and
with a radius of 7 inches. 3 feet in radius. Find the exact volume and surface
area of the tank.