Page 710 - Basic College Mathematics with Early Integers

CHAPTER 9 REVIEW 687

57. Find the volume of a pyramid with a square base 58. Approximate the volume of a tin can 8 inches high
2 feet on a side and a height of 2 feet. and 3.5 inches in radius. Use 3.14 for p.

59. A chest has 3 drawers. If each drawer has inside mea- 60. A cylindrical canister for a shop vacuum is 2 feet tall
1 1 2 and 1 foot in diameter. Find its exact volume.
surements of 2 feet by 1 feet by foot, find the
2 2 3
total volume of the 3 drawers.

(9.6) Given that the pairs of triangles are similar, find the unknown length n.

61. 62.
n
8 20
20
15 20
n 30

63. 64. 10
5.8 8
n 24
5
n

6

Solve.

65. A housepainter needs to estimate the height of a 66. A toy company is making a triangular sail for a toy
condominium. He estimates the length of his shadow sailboat.The toy sail is to be the same shape as a real
to be 7 feet long and the length of the building’s sailboat’s sail. Use the following diagram to find the
shadow to be 42 feet long. Find the approximate
1 unknown lengths x and y.
height of the building if the housepainter is 5 feet
2
tall.

26 ft
24 ft
y
2 in.
x
10 ft

Mixed Review

Find the following.

67. The supplement of a 72° angle. 68. The complement of a 1° angle.