Page 709 - Basic College Mathematics with Early Integers

686 C HAPTE R 9 I GEOMETRY

(9.4) Find the area of each figure. For the circles, find the exact area and then use p L 3.14 to approximate the area.

43. 12 ft 44. 45.
15 cm
10 ft 14 m
40 cm
36 ft
20 m

46. 47. 48.

9 yd 7 ft Square 9.1 m

21 yd

49. 64 cm 50.
4 m
3 m
26 cm
12 m
32 cm

13 m

51. The amount of sealer necessary to seal a driveway 52. Find how much carpet is necessary to cover the floor
depends on the area. Find the area of a rectangular of the room shown.
driveway 36 feet by 12 feet.

10 feet
13 feet

(9.5) Find the volume and surface area of the solids in Exercises 53 and 54. For Exercises 55 and 56, give an exact volume
and an approximation.
22
53. 54. 55. Use p L 3.14. 56. Use p L .
7
2q in. 6 ft 50 cm
q km

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2q in. 2 ft 7 ft
2q in.
20 cm