circumference = pi x diameter
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The formula; 2 * Pi * Radius = circumference Will calculate the circumference of a circle.
find the radius of a circle with circumference of 42.1
The circumference of a circle is the length of the circle's perimeter.
circumference of a circle = 2piradiuis or diameter*pi
When the shape is a circle, then the perimeter is called"circumference".The circumference IS the perimeter of a circle.