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18 May, 09:06

If the circumference of a circle below is 75 inches what is the length of DE

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  1. 18 May, 09:35
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    The circumference formula is 2Πr, so simply equal that formula to 75.

    2Πr=75

    Divide both sides by 2

    Πr=37.5

    So radius is 37.5/Π.
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