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半径为1cm的两个等圆,其中一圆经过另一个圆的圆心,那么这两圆的公共弦长为( )...
半径为1cm的两个等圆,其中一圆经过另一个圆的圆心,那么这两圆的公共弦长为( )
A.3cm
B.2cm
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102412275955003/SYS201311031024122759550029_ST/0.png)
cm
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102412275955003/SYS201311031024122759550029_ST/1.png)
cm
考点分析:
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