1. a 之长度值为何? a. 26.5165 2 k J* ~' ^! r( X9 Z$ D" V
2. b 之半径值为何? c. 10.2802$ D4 M2 {9 j& Y9 y4 b8 a6 d
3. c 之半径值为何? c. 13.1966& }" V0 g- E' D8 A
4. d 之长度值为何? a. 75.0000 - G$ }. E+ N9 I+ O5. 红色剖面线区域之面积为何? a. 391.6037 : x2 q) ^1 Z( {0 K7 u2 k - E8 |5 x' r" k0 V: Q, S7 n% Y! c