求:
5 n Q1 o" B) T+ X+ F9 K1. a之距离为何? 3 v& Q, s- V; G' @2 X
(A) 91.5699 (B) 91.5969 (C) 91.5996 $ {' m% k- t5 Y# r5 [
2. b之距离为何?
, {0 b# A/ l1 x- Z; { M6 A (A) 61.9487 (B) 61.9784 (C) 61.9847 . T& G3 v. @' W |- G8 Y. W+ z
3. ABFC围成之面积为何? : Z' c9 |0 q4 D: ~2 g& ]8 B
(A)4027.3023 (B) 4027.3302 (C) 4027.3320 |