How do I find the perimeter of a circleSolutionThe perimeter

How do I find the perimeter of a circle?

Solution

The perimeter or circumference of a circle is given by the formula: Circumference = 2*pi*r , where r is the radius of the circle and pi is a constant.

If you know the radius of the circle, just substitute r in the formula given and you have the circumference or perimeter of the circle.

The perimeter of a circle with radius r is given by 2*pi*r.