C = 2Ï€r
C = 2Ï€ * 12.5
C = 25Ï€ or 78.5398 feet.
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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.
circumference = π x diameter => diameter = circumference ÷ π ~= 20ft ÷ 3.14 ~= 6.37 ft
A circle with a diameter of three feet has a circumference of 9.4 feet.
Circumference of the circle = 7*pi feet