SOLUTION: If the radius of a circle is 11 inches then what is the crcumference of a circle?

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Question 482328: If the radius of a circle is 11 inches then what is the crcumference of a circle?
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
the circumference of a circle is equal to 2 * pi * r
pi is a constant those value is 3.1415926535898.
if the radius is 11 inches, then the circumference is equal to 2 * pi * 11 = 2 * 3.1415926535898 * 11 = 69.1150383789756.
you can also leave the answer in terms of pi.
in that case, the circumference is equal to 2 * pi * 11 = 22 * pi.