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(2000•河南)如图,⊙O1与⊙O2相交于A、B.已知两圆的半径r1=10,r...
(2000•河南)如图,⊙O
1与⊙O
2相交于A、B.已知两圆的半径r
1=10,r
2=17,圆心距O
1O
2=21,公共弦AB等于( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232724992476375/SYS201310212327249924763000_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232724992476375/SYS201310212327249924763000_ST/0.png)
B.16
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232724992476375/SYS201310212327249924763000_ST/1.png)
D.17
考点分析:
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