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Two circles share a common chord PQ.  The chord cuts off a 90 degree arc of circle A and a 90 degree arc of circle B. If the area of quadrilateral ABPQ is 4, find the combined area of the gray regions.

 

 Mar 4, 2021
 #1
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Two circles share a common chord PQ.  The chord cuts off a 90 degree arc of circle A and a 90 degree arc of circle B. If the area of quadrilateral APBQ is 4, find the combined area of the gray regions.

 Mar 4, 2021
 #2
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Grey area = 3/4(2 * r2pi)       r = 2

 Mar 5, 2021

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