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14 January, 14:41

Find the radius of a circle with an area of 615.75 square kilometers

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  1. 14 January, 15:04
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    Formula for circle area = πR 2

    = 3.142 x R x R

    615.75 = 3.142 x R x R

    R x R = 615.75/3.142

    Rsquared = 195.973901973

    R = √195.973901973

    = 13.9990678966

    D = 2 x R

    D = 2 x 14 (13.999 rounded off)

    = 28cm
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