Pi Chart Day where the students have to gather some categorical data and display it as a Pi Chart in the food medium of their choice (cake, pie, pizza, cookie cake, etc).
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
It is unknown which specific person invented pi, but ancient Egyptians are the first group to have used it.
Stouffer's
Area of any circle is: pi*radius*radius or pi*r^2
a person
Archimedes
1994
Archimedes