[img]2012q1/ct_egreqm_egreqjs_0264_20121[/img] In the figure above, the radius o

游客2024-01-12  12

问题 In the figure above, the radius of circle O is 3, and m∠AOB=60. What is the perimeter of the shaded region?

选项 A、 
B、 
C、 
D、 
E、 

答案 C

解析
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