SAT geometry problem of the day Area Probabilty, square + semicircle

Geometry SAT problem Area Probability square and semicircle answer JUST

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Half of a circle is inside a square and half of the circle is outside.  If a point is selected at random inside the square, find the probability the point is not inside the circle. The radius of the circle is 4r, the side of the square is 8r. (Answer in terms of π)

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