A circle is circumscribed around a square as shown in the figure. The area of on

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A circle is circumscribed around a square as shown in the figure. The area of one of the four shaded portions is equal to $$\frac{4}{7}$$. The radius of the circle is :

Options:

A . $$\sqrt 2 $$

B . $$\frac{1}{{\sqrt 2 }}$$

C . $$2$$

D . $$3$$

Answer: Option A

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