原帖由 jicheng 于 2007-1-4 21:43 发表 & ^6 J" f; i$ g% u% o
求:( t; b+ j6 p+ Z5 D) M
1. a 之长度为何?
' G4 P8 E9 [9 f a. 9.6477 b. 9.6747 c. 9.6774
7 ~2 n# R0 k$ ^4 ~* }2. b 之长度为何?/ q( p: S3 e, H# j3 t, I* n
a. 14.5116 b, 14.5161 c. 14.5611. d s& K( c( t! h4 ]
3. A弧之弧长为何?
& A* ?6 ^" G" ?# X, L4 E% R a. 27.0034 b. 27.0304 c. 27.0403 ...
. n6 b, V6 Z" kjicheng 大哥救命啊,我怎么做这题别的都对,那两个弧长就是不对啊,我把我做的图传上来,你帮我看哈! |