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March 29, 2017

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The area of a circle is 28.26 square centimeters. What is its diameter (use 3.14 for ð)?

  • geometry - ,

    A = pi * r^2
    28.26 = 3.14 * r^2
    28.26 / 3.14 = r^2
    9 = r^2
    3 = r

    D = 2r

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