By increasing the number of sides of the polygons, the perimeters become closer in length to the circumference of the circle. Approximating Pi Infinite Secrets homepage ...

The definition of pi is fairly simple: It's the ratio of the circumference of any circle to the diameter of that circle. In celebration of the most famous mathematical constant, people eat pie and ...

Everywhere there's a circle or a spiral, you can find pi. Pi is hiding in the meandering of rivers, in light and sound waves, ...

The circumference of a circle is, in turn, equal to 2πr, where r is the circle's radius. No matter how big or small a circle is, this relationship will always be the same, which is why it's ...