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12 December, 22:59

To the nearest tenth of a centimeter, what is the circumference of a circle with a radius of 2.5 cm? (Use 3.14 for π.)

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  1. 12 December, 23:01
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    To find a circumference of a circle you have to use this expression: C = d π. d stands for the diameter, so let's find that first.

    To find the diameter multiply the radius by 2.

    2.5 x 2 = 5

    Let's rewrite our equation now. C = 5 · π

    15.71 = 5 · π

    The answer is 15.71
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