【进阶级练习题87】7 k$ c( }0 O$ @
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求: - T! i' V% @: ]. T4 A& T% L1. A之距离为何?- H; H7 }. c6 Z0 z2 p
a. 25.7812 b. 25.8712 c. 25.8721. S7 G0 D% C* ^7 W
2. B之半径值为何? 3 E: b' u4 k( x; [' Z# C) o' M a. 12.9409 b. 12.9904 c. 12.9940 ' _5 o9 ~, n+ h3. CD之距离为何? + J: i+ X2 e& i a. 21.2132 b. 21.2231 c. 21.2321' _) Q" U6 ~& S
4. ∠CDE角度值为何?7 g9 h0 \7 r4 G2 ]# H/ i4 W
a. 24.376° b. 24.637° c. 24.736° + ?. Q" @% A- Q$ C- a5. 蓝色剖面线区之面积为何? 7 z) N0 v" `/ Y/ Y) _2 D5 I a. 83.5686 b. 83.6568 c. 83.8566