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How many radii does it take to equal the length of the circumference of a circle?

 Feb 4, 2016
 #1
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2π

To be exact

2pi = 6.2831853071795865

 Feb 4, 2016
 #2
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Circumference = 2 x r x pi

Circumference   =   2Pi  r

 Feb 4, 2016

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