Respuesta :

You mean the digit right, well pie is not made, but formed by dividing the circumference and the diameter.

[tex]\pi = \frac{c}{d} [/tex]
Pi is made by dividing the circumference of a circle by its diameter.
[tex]c = \pi \times d[/tex]
[tex]d = 2 \times \pi \times r[/tex]
R = Radius
D = Diameter
C = Circumference

I hope this helped :)