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12 July, 23:04

The circumference of a circle is 31.4 miles. what's the circles diameter

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  1. 12 July, 23:20
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    The circumference formula=

    C=2 pi r

    31.4=2*3.14*r

    31.4/6.28=r

    r=5

    diameter is D=2r=2*5=10
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