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In the figure below, O is the centre of ...

In the figure below, O is the centre of the circleand OABC is a square. P and Q are the midpointsof OC and OA respectively. The area of the square(in `cm^2`), if the area of the shaded part is `38.5 cm^2` is

A

49

B

81

C

144

D

196

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The correct Answer is:
C
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