Circumference of a circle = 2*pi*radius or pi*diameter
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(4)(pi) or 12.5664
The circumference of a circle is the diameter times pi (3.141) so therefore a 4 meter circumference circle has a diameter of 1.273 m E.g. 4 / 3.141 = 1.273
Unless you are talking about an electric meter or a gas meter, meters do not have a circumference. A circumference is the distance around the outside of an object. A meter is a unit of measurement, not an object.
circumference = diameter X pi pi = 3.1416 circumference = one meter X 3.1416 = 3.1416 meters
The circumference of a 9.5-meter diameter circle is: 29.85 meters. (C = d x Pi)