A circle with center O is shown in the figure. A rectangle PQRS of the maximum possible area is inscribed in the circle. If the radius of the circle is a, then the area of the shaded portion is _______.

A circle with center O is shown in the figure. A rectangle PQRS of the

1.	A circle with center O is shown in the figure. A rectangle PQRS of the maximum possible area is inscribed in the circle. If the radius of the circle is a, then the area of the shaded portion is _______.
A.	πa2 – a2
B.	πa2 - √2a2
C.	πa2 – 2a2
D.	πa2 – 3a2
Answer» D. πa2 – 3a2

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A circle with center O is shown in the figure. A rectangle PQRS of the maximum possible area is inscribed in the circle. If the radius of the circle is a, then the area of the shaded portion is _______.

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