Circumference refers to the size of something as given by the distance around it, e.g. the circumference of a circle is the distance around it, or its perimeter. The circumference of a circle can be used in the following formula to determine other values in a circle: C=2πr, or C=πd, where C is the circumference of the circle, r is the radius of the circle, d is the diameter of the circle and equivalent to twice the radius, and pi is, well, pi.
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The perimeter of a circle is its circumference.
ok one what grade are in because the circumference is the area around a circle
It is the constant representing the ratio of the circumference of a circle to its diameter.
No, the math term ratio doesn't mean multiply.
Yes it is the number u use to find the area and circumference of a circle