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如图,正方形ABCD的边AB=1,和都是以1为半径的圆弧,则无阴影两部分的面积之...
如图,正方形ABCD的边AB=1,
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和
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都是以1为半径的圆弧,则无阴影两部分的面积之差是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164147191600638/SYS201310221641471916006013_ST/images2.png)
A.
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B.1-
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C.
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-1
D.1-
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考点分析:
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2与直线x=1,x=2,y=1,y=2围成的正方形有公共点,则实数a的取值范围是( )
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