Pi times the diameter.
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The circumference of a circle is its diameter times pi, which is the same as twice the radius times pi.A = 2r (pi)In this instance, the circumference is 32(pi) inches(about 100.53 inches)
circumference of a circle = 2*pi*radius or pi*diameter
The formula for the circumference of a circle is C = pi r2 where r is the radius. Substituting 56 inches for the radius gives: C = pi(56)2 = (3136)pi inches.
Circumference of a circle is (pi * diameter). Area of a circle is (pi * r2).
Circumference of a circle = 2*pi*radius or diameter*pi