Circumference = 2*pi*radius or diameter*pi
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Circumference of the circle: 38*pi in miles
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 a circle with the diameter of 14 ft is: 44 feet.
The circumference of a circle whose diameter is 1.5 ft is: about 4.712 feet.
The perimeter and circumference of a circle are the same thing.