12.566 feet.
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It will have a radius of 2 because 2*pi*radius is the circumference of the circle.
2, because the radius is half of the circumference
The circumference of a circle with a radius of 8.5 cm is: 53.41 cm (radius x 2 x Pi = circumference).
2*pi*radius = circumference 2*pi*radius = 13 Making the radius the subject of the formula is: radius = 13/(2*pi) = 2.06901426 feet Check: 2*pi*2.06901426 = 13 feet
circumference of a circle = 2*pi*radius or pi*diameter