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Mathematics 11 Online
OpenStudy (anonymous):

Find the exact area of the region bounded by two concentric circles with radii 10 inches and 6 inches.

OpenStudy (whpalmer4):

Formula for the area of a circle with radius \(r\) is \(A = \pi r^2\). Find the area of the bigger circle. Find the area of the smaller circle. Subtract the latter from the former.

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