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(2005•扬州)弧长为6π的弧所对的圆心角为60°,则弧所在的圆的半径为( )...
(2005•扬州)弧长为6π的弧所对的圆心角为60°,则弧所在的圆的半径为( )
A.6
B.6
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232550768876078/SYS201310212325507688760002_ST/0.png)
C.12
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232550768876078/SYS201310212325507688760002_ST/1.png)
D.18
考点分析:
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