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19 April, 00:39

The diameter of a circle is 8 miles. What is the radius?

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  1. 19 April, 03:09
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    4 miles

    Step-by-step explanation:

    The diameter is twice the radius, or

    d=2r

    We know the diameter is 8, so we can substitute that in for d

    8=2r

    Since we want to solve for, r, we need to get r by itself. To do that, divide both sides by 2

    8/2=2r/r

    4=r

    So, the radius is 4 miles
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