why Pi is important?

Question

I understand the mathematical definition of Pi, but why does it end up being used in so many formulas and applications in math, engineering, physics, etc? What does it unlock?

Edit: I understand Pi is the ratio of circumference to diameter. But why is that fact make it important and useful. For example it shows up in the equation for standard normal distribution. What does Pi have to do with a normal distribution. That’s just one example.

In: 3

Answer 1

Pi is important be cause it is a fundamental attribute of nature and very useful. Without PI it is impossible to comprehend or to calculate many simple things, like how a circuit works or electricity is generated or how elementary particles interact with each other, or even how to accurately design a wheel.