The area of the shaded region in the adjoining figure is

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The area of the shaded region in the adjoining figure is

Options:

A . $${a^2}\left( {\pi - 1} \right)sq.units$$

B . $${a^2}\left( {\frac{\pi }{2} - 1} \right)sq.units$$

C . $$\frac{{{a^2}}}{2}\left( {\pi - 1} \right)sq.units$$

D . $$\frac{{{a^2}}}{2}\left( {\frac{\pi }{2} - 1} \right)sq.units$$

Answer: Option B

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