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First find the area of the two regions circle $\"\"$ and quadrilateral $\"\"$ .

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Find the area of circle.

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The circle equation is $\"\"$ .

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Rewrite the circle equation as $\"\"$ .

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Compare it with circle equation $\"\"$ , where $\"\"$ is radius of circle.

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Radius of the circle $\"\"$ .

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Formula for the area of the circle is $\"\"$ .

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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Area of the circle $\"\"$ square units.

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Find the area of quadrilateral.

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The quadrilateral inside the circle is a square.

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Let the length of the square is $\"\"$ and diagonal is $\"\"$ .

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Length of the diagonal of a square, multiply the length of one side by the $\"\"$ .

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$\"\"$ equation $\"\"$

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Observe the diagram : Radius of the circle is the half part of the diagonal of square.

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$\"\"$

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Substitute $\"\"$ .

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$\"\"$

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$\"\"$ .

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Substitute $\"\"$ in equation $\"\"$ .

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$\"\"$

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$\"\"$ .

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Side length of the square $\"\"$ units.

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Find the area of the square $\"\"$ .

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$\"\"$

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$\"\"$ square units.

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The area of the blue shaded region $\"\"$ .

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$\"\"$

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$\"\"$ square units.

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The area of the blue shaded region $\"\"$ square units.