what is pi

[size=200]Wow but sry ur a total retard[/size] [size=150] Pi is 3.14 and it is to help solve an equation[/size]

Pi is the number of times that a diameter goes into a circumference.
It was worked out by some clever dude.
It is needed for all sorts of building and engineering things.

es la relación entre la longitud del contorno de la circunferencia (perímetro) respecto a su diámetro. Es un número irracional (infinito no periódico)