A simple guide on how to show the circumference of a circle is π x diameter aimed at children aged between 11 and 14 ...

It asks you to find the circumference of a circle. In order to do so you first have to find the circle's diameter through the use of an isosceles triangle.

What Is a Circle? My favorite way to define a circle is in terms of how to draw one. In the episode What Is Pi? we learned how to draw a circle arts-and-crafts style. To do this, start by cutting ...

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 ...

Yes, this is essentially the same equation used to find the circumference of a circle if θ is measured in radians (which it should be).