circumference of a circle = 2*pi*radius or pi*diameter
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The circly bit on the outside
Measurement around the outside of something, usually a circle or sphere.It is the perimeter of a shape. For instance, the circumference of a circle is the distance around it (2 x the radius x pi).
Both are the measurement of the outside edge of a figure, circumference relates specifically to a circle, and perimeter refers to polygons.
is 7 and 8 and 11
It is the measurement from the middle point of a circle to the edge of the circle