To find the circumference close of a circle use the given approximation for π or the π button on a calculator and either the diameter close diameter The distance across the circle, circumference ...

Circles, sectors and arcs - Edexcel Circumference of a circle. The circumference of a circle is its outside edge, and is the same distance from the centre at every point along its length.

I am Pi, the ratio of the circumference of a circle to its diameter. Picking up the phone here at the Smithsonian, I set out to find out more about Pi and how it is represented in the national ...