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楼主 |
发表于 2007-1-5 21:11
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求:# ~. p& K+ |2 s5 P& u
1. a之长度为何?9 k9 D* a% K$ M: I0 Y r
a. 17.4965 b. 17.5964 c. 17.6594 a, s% E, n, G, d8 p q% M( x3 @; b: i
2. b之长度为何?2 |. K p" T9 B- m$ D5 a6 R
a. 20.3266 b. 20.3626 c. 20.6236
. k" V% r! M0 G1 o7 z: Q3. c之长度为何?0 }( }/ G6 F( R1 F
a. 29.5200 b. 29.5300 c. 29.5400
8 d* U0 y3 |9 u, q0 v4. 红色曲线围成的区域之周长为何?
0 i9 N3 C* {- ]1 x! y a. 117.3475 b. 117.4753 c. 117.5734
5 G; r, ]% N- U/ m+ w5. 绿色剖面线区域之面积为何?
, B, @( k) J9 A f8 X9 L+ y3 k a. 233.1049 b. 233.4109 c. 233.4901 |
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