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24 October, 15:27

What is the formula for the circumference of a circle using the radius?

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  1. 24 October, 15:47
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    We know that:

    C=πd Were π (pi) = 3,14 ... and d=diameter

    We know that the radious is 2d, so we aply this to the formula and we get that:

    C=2πr
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