circumference? 40 pi ft.
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40 ft
Radius = 1/2 diameter Radius = 7.5 ft = 7ft 6inches.
The circumference of a circle with the diameter of 14 ft is: 44 feet.
The area of a circle with a 13 ft diameter is: 132.7 square feet.
To make a 4 ft diameter circle, you need to find its circumference. Since this is found by taking pi times the diameter, you would need approximately 12.57 ft.