What is Pi
Who used Pi and other meanings.
Pi is a letter in Greek and we use it as a math term. William was the first person two use Pi with the mathematical term. Another way too remember Pi or use Pi is the circumference of a Circe and its diameter. when people use Pi they usually multiply Pi by different numbers like the diameter if the diameter is 6 the do 6 times Pi which would be 6 times 3.14