Idiot\'s Guides Basic Math and Pre-Algebra

332 Appendix B

106.

100

72

tan72

100

x

x100tan72 307.8 feet

96. SA 582141

2

? 8? 55641 4 ?5 20 641805144 cm^2

97. SA 52 1
    2?^18?^241118?^1124?^11130?^1154321198126413305 1,224
    cm^2


98. SA 52 ?π? 15212 ?π? 15? 225450 π 1660 π 5 1,110π square inches


99. SA 5? π? 52 1 π? 5? 13 5 25 π 1 65 π 5 90 π square inches

10 0. SA 5 4? π? 182 5 1,296π cm^2

101. V ^8 ^5 ^14 ^560 cubic inches

102. V ^1

2

1

3

(^1) 
3
 26 22.5  42 292.5 42  4,095

103. A diameter of 20 cm means a radius of 10 cm. V 5 π? 102? 48 5 4,800π cm^3


104. V 5?^1 π? 502? 45 5 37,500π
     3
     cubic inches.


105. A sphere with a diameter of 60 cm has radius of 30 cm. V 54
     3

4

3

? π? 303 5? π? 27,000 5 36,000π

107.

305.5

3

tan3

tan3

305.5

305.5 5,829 feet

x

xtan3305.5

x