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Let O be the center of a circle with diameter AB. Let C be a point on the circle such that angle COA = 90. Point P lies on line segment OA, and when line segment CP is extended past P, it intersects the circle at Q. If PQ = 7 and PO = 20, then find r^2, where r is the radius of the circle. 

 

 Oct 22, 2022
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r^2 = 40/3.

 Oct 22, 2022

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