Eli5: I always thought pi is 22/7, but recently i found out that 22/7 is a number that is pretty close to pi, not pi itself. Then how do mathematicians found more “pi” ?

Question

Eli5: I always thought pi is 22/7, but recently i found out that 22/7 is a number that is pretty close to pi, not pi itself. Then how do mathematicians found more “pi” ?

In: 167

Answer 1

Explain to a five year old: when you divide the circumference (the distance around the circle) by the diameter (the widest distance across it) you get three and a bit. When you do the long division on the “and a bit” there keeps being a remainder, so you have to keep adding decimal places.