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March 27, 2017

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what is the exact area of a circle with a diameter of 15 inches?

  • math - ,

    radius = 15/2
    area = pi r^2 = pi (225/4)

  • math - ,

    so its 225pi sq. in?

  • math - ,

    exact? One cannot write down exactly irrational numbers, such as PI.

    The exact answer is 225/4 * PI

  • math - ,

    pi r^2 = pi D^2/4 = area of circle

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