9 E) }; L% X# A/ z3 P求: ' a$ \7 J- N3 h0 m0 z E* y: H |1. AD 之距离为何? 9 c# b& S; P0 _( p a. 65.0078 b. 65.0780 c. 65.0870* E% ~/ e' A0 T W$ N
2. ∠ABC 之角度值为何? ) W% k4 Q7 _& q# W/ Y, e9 W: K+ e a. 84.129° b. 84.219° c. 84.912° 8 i( `& A! i' h% a1 q; Q3. a 弧之长度为何?9 s/ T, W, p- W8 f; L6 P; i
a. 37.4181 b. 37.4818 c. 37.4881 , K [. y: p9 y4. 此图包围的面积为何?5 h0 X2 h5 U$ \" P) _- V
a.3397.8017 b. 3397.8107 c. 3397.8710