5 m" N. I) {; R3 O* D3 |* I; ^5 u求:* F" U' F. l# j- Q8 h/ M7 F
1. a 之距离为何?7 Y0 R9 j& l" a1 j l
a. 15.7058 b.15.7508 c. 15.78508 M' a1 E5 F N; B: ^. H# _
2. b 之长度为何? 2 W5 Z+ [% i2 v! U a. 66.1049 b. 66.1490 c. 66.1904 ' i! X6 Y- F( o, N3. c 之角度值为何? & M; H9 b7 V# S4 y: K a. 57.6973° b. 57.7693° c. 57.9763°5 \( I* L$ d8 V# t" C4 K% g8 i
4. 此图外围之面积为何?* M3 ]( y1 b( q3 Z0 X1 Y
a. 2479.7102 b. 2479.7120 c. 2479.7210