Take any circle. The ratio of its circumference (c) to its diameter (d) is pi.
In other words, c/d = π therefore c = dπ.
As the diameter is twice the radius this can be stated as c = 2rπ or, more familiarly 2πr.
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Circumference = Pi x Diameter (Pi equals 3.14)
Yes. Circumference (of a circle) is pi x the diameter of the circle.
When you are given the circumference of a circle asked to find the diameter, divide the circumference by pi. The formula for circumference is pi x diameter, so the formula for diameter is circumference divided by pi. So 7 divided by pi equals about 2.22.
The circumference of a circle equals pi times its diameter: C = pi*D.In this case, the circumference is 3.4*pi, which is about 10.6.
The circumference equals pi times the diameter . C = pi . d pi = 22/7 = 3.14