2 t0 h" t( K, v求:- w( t; ~/ U9 t3 U) `: `
1. 蓝色曲线之弧长为何?$ g2 M! L' Z, u# N9 S
a. 45.7543 b. 45.7453 c. 45.7354 0 Y% k& O( l3 Q9 O$ B& o( X2. 红色曲线之弧长为何?5 S5 [; t) y% }$ h( ~- m* S
a. 38.3352 b. 38.3532 c. 38.53322 _% N4 a( v/ @! l
3. 绿色曲线之弧长为何? ! p/ P! g f6 N% y a. 30.7033 b. 30.7303 c. 30.7330- |- h$ T% Q8 H+ f& j3 S. V8 {
4. ∠DAE之角度值为何?" ^; ~! a2 g7 x- Q
a. 106.1340° b. 106.3140° c. 106.4310° # {4 t- i! l# T) o9 I Q O# n. O
5. A B C 所围成的区域之面积为何?* U/ j# b/ r1 C8 f$ b% T
a. 424.2685 b. 424.6285 c. 424.8625 1 E! x) I' M) x- s, N, ~# M! k1 e5 `; E+ d2 h
[ 本帖最后由 shaonx 于 2007-12-9 23:49 编辑 ]