It would be exactly 4/Pi inches. This makes it approximately 1 1/4 inches.
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about 12.57 inches
Circumference of the circle: 4 times pi in inches
Circumference of circle: 4 times pi in inches
circumference = 4*pi inches
Multiply the radius by 2 to get the diameter. Then multiply the diameter by pi to get the circumference. Example: If radius = 2 inches, diameter = 4 inches circumference = 4 x pi = 4 (3.1416) or about 12.57 inches