Circumference = 2*pi*r
So 2*pi*r feet = 16*pi feet
that is r = 8 feet
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The radius is 8 feet.
16pi. If your talking feet would be approximately 50 feet
The circumference of a circle if the radius is 2 feet is: about 12.57 feet.
If the radius of a circle is 8 feet the circumference is about 50.27 feet.
The radius of a circle with a circumference of 13 feet is: 2.069 feet.