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15 August, 03:36

Find the radius of a circle so that its area and circumference have the same value

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  1. 15 August, 07:30
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    Area = pir^2

    Circumference = pi * diameter

    You can cancel out pi since both equations have it; now if r^2=d then r has to be 2 as 2^2=4 and d=2r so if r is 2 d=2 (2) = 4
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