【进阶级练习题59】2 \ ]- ~/ k* z1 P
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求: 1 T5 U5 B" {' X( w1. a 之长度值为何?! {0 ^; f m, \
a. 33.1137 b. 33.1371 c. 33.1713 - @. A+ l) g; f: E' Q# _5 Y2. b 之高度值为何? ' F+ c3 L/ n: s" o ^% x9 y a. 56.5586 b. 56.5685 c. 56.58560 \- N5 T& Y) L8 v
3. c 之长度值为何?9 x. ]$ k" [$ V0 e/ x7 c
a. 61.2293 b. 61.2329 c. 61.2932( O$ ]) c" H4 [6 n
4. 此图外围之面积为何?5 }" U% b8 G6 E# \
a. 3100.0000 b. 3200.0000 c. 3300.0000