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First, we should note that the formula for circumference is Dπ, or diameter times pi. Second, we should note that the diameter is simply double the radius. With this in mind, the circumference formula can then be turned into (2r)π

C=2(14)π

C=28π which is about equal to 87.96459

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13y ago
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Q: What is the circumference of a circle if its radius is 14cm?
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