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15-01-2017
Mathematics

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A dartboard has a diameter of 18 inches.what are its radius and circumference?

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15-01-2017

We know, radius = diameter / 2 = 18 / 2 = 9 in.
Circumference = 2πr = 2π(9) = 18π = 18 * 3.14 = 56.52 in.

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