Practice and Applications
7. 32 °
9. 32 °
11. 37
13. 700
15. 0.630
17. 36.5
19. 25.5 mm
21. 0.0118 ft2
23. 235 mm
25. 3320 in.2
27. 6190 cm3
29. 160,000 ft3
31. 55,700 cm3
33. 1.62 m2
35. 101 in.2
37. 25 °
39. 65 °
41. 53 °
43. 2.4
45. p = πa + b + 4a2 + b2−−−−−−−√
47. A = ab + 12 πa2
49. yes
51. n2 ; A = π(nr)2 = n2(πr2)
53. ad = bc
55. 74 °
57. 7.8 m
59. 10¯ cm
61. 10¯ m
63. 6.0 m
65. 3.73 mi
67. 26,200 mi
69. 30 ft2
71. 1.0 × 106 m2
73. 190 m3
75. 10 ft
77. 1000 m
79. 159 gal
81. w = 132 cm , h = 74.5 cm
83. r = 32 h
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