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如图,在半径为R的圆内作一个内接正方形,然后作这个正方形的内切圆,又在这个内切圆...
如图,在半径为R的圆内作一个内接正方形,然后作这个正方形的内切圆,又在这个内切圆中作内接正方形,依此作到第n个内切圆,它的半径是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102412276603221/SYS201311031024122766032016_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102412276603221/SYS201311031024122766032016_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102412276603221/SYS201311031024122766032016_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102412276603221/SYS201311031024122766032016_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102412276603221/SYS201311031024122766032016_ST/3.png)
考点分析:
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