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Circumference of a circle

Mathematics
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What is the circumference formula?

Apr 13th, 2015

Circumference =π × diameter

Or

Circumference= 2 ×π × radius

The reason for the second formulas is that the radius is half of the diameter; so, if you know radius, you can get the diameter by multiplying the radius times two.  Most people use the short version for pie. Pie = 3.14


Apr 13th, 2015

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Apr 13th, 2015
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