* G0 J5 m6 o- w3 q求:# I" i7 q/ i6 N) p
1. ∠b弧之角度值为何?% d% i5 R! |7 d% \
a.68.557° b. 68.575° c.68.755° 7 @" k6 K" b. s* a2. c 弧之长度为何?$ H) w+ R7 d: f4 O d
a. 68.4057 b. 68.4750 c. 68.45072 J& C5 x8 M$ z$ d& H/ `: N$ w2 E" R* i
3. d 之半径值为何? J: k) o1 M7 s" ~" B( u/ F' E
a. 14.1085 b. 14.1508 c. 14.18509 D; J% z3 n/ r5 S1 I- R2 D
4. e 弧之长度为何?+ h- d+ ]$ x7 T0 X0 k+ ?% C
a.99.4029 b.99.4209 c.99.2409 J( s( n0 z( ]7 H; h {8 T) _5. f 之长度为何? : c, i* @2 a- c" R K a. 41.2925 b. 41.2295 c. 41.2529& A' V4 D4 j4 e- w- S