Page 670 - Basic College Mathematics with Early Integers

S E C T I O N 9.3 I PERIMETER 647

32. 16 cm 33. 18 cm 34.
2 cm 5 cm
11 cm 9 cm
22 km
4 cm
14 cm
3 cm
9 cm 12 km

5 km
6 km

Objective Find the circumference of each circle. Give the exact circumference and then an approximation.
Use p L 3.14. See Example 8.

35. 36. 37.
2.5 in. 8 mi
17 cm

38. 39. 40.

50 ft 26 m

10 yd

41. Wyley Robinson just bought a trampoline for his 42. The largest round barn in the world is located at the
children to use.The trampoline has a diameter of Marshfield Fairgrounds in Wisconsin.The barn has a
15 feet. If Wyley wishes to buy netting to go around diameter of 150 ft.What is the circumference of the
the outside of the trampoline, how many feet of barn? (Source:The Milwaukee Journal Sentinel)
netting does he need?

43. Meteor Crater, near Winslow,Arizona, is 4000 feet in 44. The largest pearl, the Pearl of Lao-tze, has a
diameter.Approximate the distance around the 1
diameter of 5 inches. Approximate the distance
crater. Use 3.14 for p. (Source:The Handy Science 2
Answer Book) 22
around the pearl. Use for p. (Source:The Guinness
7
Book of World Records)