math

If the circumference of a circle is 16 pi, what is its area ?

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  1. A = pi * 8^2

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    Ms. Sue
  2. c = 2rpi

    16pi = 2rpi
    16pi/2pi =r
    8 = r

    A = r^2 pi
    A = (8)^2 pi
    A = 64pi

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