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7 November, 20:28

If area of a circle measures 16/25 pi cm square, what is the circumference of the circle in terms of pi

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  1. 7 November, 20:55
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    A = pi*r^2

    (16/25) * pi = pi*r^2

    16/25 = r^2

    rt (16/25) = r

    r = 4/5

    C = 2pi*r

    C = 2pi * (4/5)

    C = (8/5) pi cm
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