DefinitionsMathematicsWhat is the Perimeter of a circle?

What is the Perimeter of a circle?

What is the Perimeter of a circle? The perimeter of a circle, also known as the circumference, is the distance around the edge of the circle. It is the length of the circle’s outer edge. The formula to calculate the circumference of a circle is C = 2πr where C is the circumference and r is the radius of the circle.

For example, if the radius of a circle is 5 units, the circumference would be 2π(5) = 2 * 3.14 * 5 = 31.4 units.

It’s worth noting that the diameter of a circle is just 2 times the radius, so one could also use the formula C = πd instead of C = 2πr where d is the diameter of the circle.

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