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In the adjoining figure , AB is the diam...

In the adjoining figure , AB is the diameter of a semicircle of maximum possible area . If the radius of the larger circle ( i.e, semicircle ) is r , the area of the inscribed circle is :

A

`(5r^2)/pi`

B

`(2pi)/sqrt3r^2`

C

`(pir^2)/4`

D

none of these

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The correct Answer is:
C
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