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Geometry

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Compound Figures: a Circle, a Square, and a Shaded Region

GEOM-PKUSAV

Pictured below is a circle with center K inscribed by a square.

Find the area of the shaded region.

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A

$8(2-\pi)\text { square units}$

B

$4(4-\pi)\text { square units}$

C

$8(4-\pi)\text { square units}$

D

$16(4-\pi)\text { square units}$