求: ; X! j& B2 K/ W. u( P1. a 值为何? 6 w; _3 o# ?1 E$ l a. 54.1193 b. 54.1219 c. 54.12917 ?! n1 h$ E/ d: ]
2. b 值为何?" I+ S8 D9 D& u5 U: U8 [5 E
a. 30.7003 b. 30.7030 c. 30.7300$ L# }9 O* }, ]) v9 e. Y
3. c 值为何?8 Z4 Z n; h" i" K
a. 14.1899 b. 14.1989 c. 14.1998 z- G; N( {, w: P, H
4. A 值为何? * e- ~" O! `; P+ Y- T* M+ h# y a. 91.0270 b. 90.2007 c. 90.2070* Q: N$ C# y& w% [* Y/ x
5. B 值为何? 2 E# R& Y! O$ U% [0 L+ Z* [* N a. 28.0142 b. 28.1024 c. 28.1240+ a: K8 ^$ O) Q# M% M
6. D 值为何? ) o0 z+ C+ |' \ a. 23.3348 b. 23.3438 c. 23.3834. b f1 v% _( k( t8 }1 D# u
7. 绿色剖面线区域之面积为何?4 P% W" {1 |( J% G3 i* J
a. 1975.0888 b. 1975.8088 c. 1975.8808 % x( [" F8 _+ }' u6 q0 N3 D$ X! y4 R ( a e+ J' E7 o+ rhttp://www.cadsj.com/attachment/19_2_9b8f9566ab1681d.gif" Z# P/ a( _6 t. H6 l) n
已核对过,条件完全具备。; \9 y+ r- m2 K/ q: g* m
提示一下:本题4个圆弧之圆心均在斜线上。