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8 August, 08:24

In a circle, a 90° sector has area 64π ft2. Solve for the radius of the circle. A. 16 ft. B. 12 ft. C. 18 ft. D. 8 ft.

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  1. 8 August, 12:04
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    The answer is A. Working the formula backwards you get that r^2=256, so r=16
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