Question

but we write the value of pie is 3.14 why??

Answer 1

pie is the value 22/7 = 3.14

Answer 2

3.14 is an approximation for \(\pi\) (pi)

pie is something you eat.

Answer 3

Pi is a never ending number so we use 3.14 to make it shorter.

Answer 4

22/7 results in a non-terminating, non-repeating decimal. Which means it is 3.14.......forever and ever. It goes on forever because it always keeps dividing.
if you try it you will see