交卷了。) v m+ b8 L* f
1.AB 距离= 84.0759
2 K5 e8 H: ^6 @/ t0 j& Y2 Z2.C周长 = 132.6652
! Z7 k8 z* m) I1 m7 X, e" C9 `3.D周长 = 113.4574
( q- c- f2 M! k+ k1 L! L, B. B2 k4.点阴影面积 =1833.9378
4 `- K6 N- S& ~) Q% V; T2 Q5.阴影面积=1677.8025
, i' D9 t- H8 r% W$ Z3 o5 Q# G+ n6.E面积 = 281.3606 |