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先作半径为的圆的内接正方形,接着作上述内接正方形的内切圆,再作上述内切圆的内接正...
先作半径为
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161658106983444/SYS201310221616581069834011_ST/0.png)
的圆的内接正方形,接着作上述内接正方形的内切圆,再作上述内切圆的内接正方形,…,则按以上规律作出的第7个圆的内接正方形的边长为( )
A.
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B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161658106983444/SYS201310221616581069834011_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161658106983444/SYS201310221616581069834011_ST/3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022161658106983444/SYS201310221616581069834011_ST/4.png)
考点分析:
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