【进阶级练习题80】4 O8 y1 b+ N8 T9 h5 ^% H, s) A
# V0 m1 g" z, J5 C- k" l5 F
求: 1 |$ B( X/ x9 W1. AB 长度为何? $ U0 u& L1 K: G' L6 ?) g a. 58.3368 b. 58.3683 c. 58.38360 i! f( A/ y5 X& Z* e
2. CD 长度为何? % t! l) h* n0 N3 `" m5 B/ s# v a. 50.9082 b. 50.9208 c. 50.9802 4 ^: n0 t1 u5 R; n+ ^3. EF 长度为何? , C z% g' c. P. V( q, a( ^ a. 54.4677 b. 54.4767 c. 54.4776# X6 e: Z; ~6 K5 }+ `+ R
4. GH 长度为何?! ~+ i3 i6 \+ w; R1 P
a. 50.4061 b. 50.4106 c. 50.4601! z& g$ u& Y. t+ G V3 _6 p
5. 最外围之面积为何? + n8 \6 {8 @1 ^& _+ g2 R! r& p, r1 s% Y a. 5185.6013 b. 5185.6103 c. 5185.6310
交作业了:* Z9 T3 a$ P$ f& X
1. AB 长度为何? , P d* @2 o/ i5 l3 ^9 w a. 58.3368 1 q, V/ o" O, r5 T
2. CD 长度为何?. ]6 y: O* e3 t8 W# |6 k+ U" ]+ f, R7 l
c. 50.9802 5 T( U5 q6 K1 |3. EF 长度为何? 5 M5 C2 M* x. F# m# P! u& T. o a. 54.4677 ( D: ^* e6 j ?, V" F
4. GH 长度为何?, U x9 P. x5 [2 S
a. 50.4061 / v: M- X) l! }* t$ W" n, T$ E6 j: t
5. 最外围之面积为何? X, w9 m! b$ a# |/ @7 P c. 5185.6310