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9 December, 09:36

A pater plate has a diameter of 9inches. what is the circumference of the plate.

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  1. 9 December, 10:58
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    Circumference is calculated by 2 pi r where pi = 22/7 or 3.14

    so if d = 9'' then r = 4.5 ''

    2 x 22/7x 4.5=28.28 inches
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