【进阶级练习题59】! k- ^0 W/ ~1 S Y( l
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求: & o' B: I+ p+ L# g6 |# |& U1. a 之长度值为何? : G& t+ W+ j( o$ y- m0 L a. 33.1137 b. 33.1371 c. 33.1713 8 `! J' ]! J2 l2. b 之高度值为何? 1 {( p0 ?% C8 P# l" I a. 56.5586 b. 56.5685 c. 56.5856 * \, }. U z% F/ p- A- F R3. c 之长度值为何? " [1 ]1 [/ N; m! V# B* f a. 61.2293 b. 61.2329 c. 61.2932 & r) }- t* i+ C* p5 M) `6 `1 h4. 此图外围之面积为何? 3 S- @0 e" J" l. h: } a. 3100.0000 b. 3200.0000 c. 3300.0000