However, actually proving that you can't write pi as a fraction is a surprisingly knotty issue. Mathematicians don't have a ...

For example, 22/7 is a pretty good approximation. But it's not pi ... In the one below, I have the second ball moving at π times the speed of the first one: See? The pattern never repeats.

There are examples that come close (such as 22 ÷ 7 = 3.14285714286), but they only give a rough approximation. As far as we can tell ... Currently, supercomputers have calculated π to over 202 ...

There are examples that come close (such as 22 ÷ 7 = 3.14285714286), but they only give a rough approximation ... supercomputers have calculated π to over 202 trillion decimal places, and ...

It’s all in celebration of pi (Greek letter π), the mathematical constant and infinite number ... Its decimal expansion begins 3.14159. Approximations to pi were known and used in many ancient ...