Help on Perimeter of circle

Introduction to Perimeter of Circle:
The Circle is a two dimensional shapes. The out side distance of the circle is know as circumference of the circle. It is also called as perimeter of circle. The distance from the center to points on boundary is constant. That distance called as radius of the circle. The diameter of circle is square of radius. It is also called as chord.

When we look at the figure.. we will come to know how to calculate are of circle perimeter. and this also helps us on what is the circumference of a circle.

The distance around a circle is called the circumference. The distance across a circle through the center point is called diameter. (Pi) is the ratio of the circumference of the circle is called diameter.