Question

why is circles formula 2 pi r in this why did the pi come​

Answer 1

Answer:

pi = $\pi$ = circumference/diameter

Step-by-step explanation:

pi = $\pi$ = circumference/diameter

in this way pi comes

example :-

let the radius be 7 then,

2 pi r = 2 * 22/7 * 7  = 44

diameter = 2r = 2*7 = 14

circumference/diameter = 44/14 = 22/7 = $\pi$ = pi