14 pi inches
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Diameter = 14 inches => circumference = pi*14 = 43.98 inches.
The circumference of a circle with a diameter of 14 is: 43.982
The circumference of a circle with the diameter of 14 ft is: 44 feet.
You need to use the formula for solving the diameter of a circle which is C = pi * D = 3.1416 * 14 = 43.98 inches (approx)
Circumference = 2*pi*radius or circumference/2*pi = radius 90 inches/2*pi = 14 inches in radius =======================