Circumference = diameter*pi feet
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Circumference = 42*pi feet or approximately 131.95 feet.
The radius of a circle if its circumference is 42 is about 6.68
The circumference of a circle is the same as the perimeter of a circle, so the perimeter and circumference would both be 3 ft.
The circumference of any circle is (pi) x (the diameter).The circumference of your circle is (42 pi) feet, exactly.The multiplications yields 131.9468915 feet (using a simple calculator) so the answer rounded to the nearest foot would be 132 feet
A circle with a radius of 42 feet has a circumference of 263.89 feet.