1. a之長度為何? Z8tQ#Pu{ a. 29.4015 b. 29.4105 c. 29.4510
!]4'f/ 2. b之長度為何? s2)a8< a. 24.4779 b. 24.7479 c. 24.7749 s QfP8}U 3. c之長度為何? Az[Yvu'< a. 36.3781 b. 36.7381 c. 36.8137 vK)^;T ; 4. 紅色剖面線區域之週長為何? =Y>_b
2 a.79.1178 b. 79.1718 c. 79.1871 ~{'.9 5. 藍色剖面線區域之面積為何? #p}I 84Q a. 313.1542 b. 313.4152 c. 313.5142