Eli5: How does pie have so many digits? Why was it created? What other use does it serve?

Question

Like, it’s just a number why is it SO specific? Other than circles I can’t think of a use that pie has. Why would we create something that only has one use (that I know of) that is almost always simplified?

In: 0

Answer 1

Pi has many uses other than finding the circumference of a circle.

https://www.risdubai.com/blog-zone/education/31999/real-life-application-of-pi/#:~:text=To%20do%20this%2C%20engineers%20use,in%20the%20field%20of%20architecture.