a person
albert Einstein
William Jones in 1707
Pi was introduced by the ancient Greek mathematicians; history does not record the name of a specific person who is responsible for this idea.
pi is 3.14 or 22 divided by 7, it's used for finding the area and crcumference of a circle, as for the inventor... WHO KNOWS?!
I don't think it was the same person. And there are several formulae to determine pi; which one do you mean?
pi is a universal constant which existed long before the first human existed. It existed even before the solar system came into being so there is no person who invented it and so no biography.
It was not invented it was discovered.
George VI created pi.
Pi is the relationship between the diameter and the circumference of a circle.
me
Archimedes