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楼主 |
发表于 2007-1-4 21:43
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求:
. r7 q! n" P* ^% X) ^1. a 之长度为何?
. ^9 r' V8 w! J3 p3 B a. 9.6477 b. 9.6747 c. 9.6774
/ E- A3 n* @2 ?2. b 之长度为何?2 `5 }0 x1 u" D7 Y1 N% ?) p
a. 14.5116 b, 14.5161 c. 14.5611
- S5 \* H& L6 I/ O }5 ^3. A弧之弧长为何?, l7 m! |- E; a
a. 27.0034 b. 27.0304 c. 27.04036 ~$ _+ D3 w( O5 H ?" a
4. B弧之弧长为何?2 Y7 R1 c) Z, Y2 E& @; b
a. 19.8049 b. 19.8409 c. 19.8940
) b9 S' ~/ Y. W. [( P- X1 O' u2 C3 F; t4 i5. C弧之半径值为何?# I8 l: ?" t, |7 D) H- y1 L
a. 21.8176 b. 21.8671 c. 21.8716$ {0 J1 r/ a# l* b" v6 P
6. 剖面线区域之面积为何?+ H8 G. Q5 F D- J$ I
a. 145.0234 b. 145.0342 c. 145.0432 |
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