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2 November, 10:43

Dereks dinner plate has a diameter of about 9 inches. Find its circumference and area.

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  1. 2 November, 11:23
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    Circumference = pi x diameter

    diameter = 9

    circumference = 9pi or 9 x 3.14

    area = pi x radius ^2

    radius = 1/2 diameter

    radius=4.5

    pi x 4.5 ^2

    4.5 x 4.5 = 20.25

    20.25 x 3.14

    area = 64 circumference = 28
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