Question #9a19f

1 Answer
Jan 18, 2015

π, which is roughly equal to 3.14159265... is the ratio of a circle's circumference to its diameter. No matter how big or small the circle is, if it's a perfect circle its circumference will always be π times its diameter.

π was not a concept that was "invented" or "proposed", but rather it was discovered. It is guessed that π was discovered by Egyptians or Babylonians some 3,000-4,000 years ago, however most values of π back then were only approximations such as 258, or the most well-known approximation 227. Neither of these approximations are good enough for use in any application of modern mathematics.

πc is simply π raised to the power c, whatever c happens to be. So if c=3 then πc=π3=πππ.