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已知圆O和圆K是球O的大圆和小圆,其公共弦长等于球O的半径,,则球O的表面积等于...
已知圆O和圆K是球O的大圆和小圆,其公共弦长等于球O的半径,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124332914834938/SYS201310251243329148349015_ST/0.png)
,则球O的表面积等于
.
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