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Question

If the area of a circle is 50.24 m2, find its circumference.

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Solution

We have :
Area of the circle (A) = ​πr2 = 50.24 m2
50.24 m2= 227×r2 r2 =50.24×722 m2 = 351.6822 m2 = 15.985 m2r = 3.998 m.

Circumference of circle (C) = 2πr
C =2×227 x 3.998 mC=44×0.571 m = 25.12 m.

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