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31 August, 15:50

What is the radius of a circle that has a circumference of 81.64 meters?

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  1. 31 August, 19:46
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    R≈12.99

    c = Circumference=pid = 81.64 To find the radius of a circle you can just divide the diameter by 2.

    pi = 3.14

    d = diameter=c/3.14 Pi is always 3.14 or 22/7.

    d = 81.64/3.14

    d = 26

    r = radius = 26/2

    radius=13 cm
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