Page 678 - Basic College Mathematics with Early Integers

S E C T I O N 9.4 I AREA 655

17. 18. 19. 20.

2 cm 6 km
4 m
1q cm 1q cm
4 km
4q in. Parallelogram 6 m
Parallelogram 3 cm
5 km
5 in. 7 cm
10 km

21. 22. 23. 24.
5 mi 25 cm

10 12 cm
mi 15
cm 5 cm
3 mi
17 mi 5 cm 4 in.

3 cm
5 in.

22
25. Use for p. 26. Use 3.14 for p.
7

r 6 in. d 5 m

Solve. See Examples 1 through 4.
1
27. A 10 -foot by 16-foot concrete wall is to be built 28. The floor of Terry’s attic is 24 feet by 35 feet. Find
2
how many square feet of insulation are needed to
using concrete blocks. Find the area of the wall.
cover the attic floor.

29. The world’s largest flag measures 505 feet by 30. The longest illuminated sign is in Ramat Gan,
225 feet. It’s the U.S.“Super flag” owned by “Ski” Israel, and measures 197 feet by 66 feet. Find its
Demski of Long Beach, California. Find its area. area. (Source:The Guinness Book of Records)
(Source: Guinness World Records, 2005)

225 feet 66 feet
197 feet

505 feet