【进阶级练习题87】" d9 b2 f8 t j4 S n9 y
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求: 5 M0 [1 d/ E& | L( Y' X5 c1. A之距离为何?, w6 o h3 M5 Q b: z5 s$ o# g8 R
a. 25.7812 b. 25.8712 c. 25.8721 . G# T* z2 q3 p! w2. B之半径值为何? ) s5 ^5 t: v/ O5 r/ `* G1 J, u" q* @: v; d a. 12.9409 b. 12.9904 c. 12.9940 4 c1 _4 F* p* M# J. s% [8 L3. CD之距离为何?% a n# S% g# O8 C1 }
a. 21.2132 b. 21.2231 c. 21.2321 . ?$ J5 D x J% }7 b4. ∠CDE角度值为何?6 T- [. k5 c# V5 Q- [ k
a. 24.376° b. 24.637° c. 24.736°5 t* _! X7 c( w; |$ A& y Z/ x
5. 蓝色剖面线区之面积为何?* q4 }+ V$ p* r
a. 83.5686 b. 83.6568 c. 83.8566