I am sure that many of you have wonder at least once in your live what is PI really? and how you can calculate it.

This is going to be a short post and i’ll try to keep it as simple as possible.

So first let’s begin explaining what pi actually is?

We can define Pi as a mathematical constant. It is defined as the ratio of a circle’s circumference to its diameter, but Pi it’s more than just that it’s turn out to be like i said before an mathematical constant and it appear in many different branches of math.

In this post i will teach you the one that i think is the easiest one.

we will begin knowing that π²/6 is equal to the sums of the inverse of all natural number power 2

this is the Basel problem prove by Euler in 1734. And its look kind of weird but trust me its really easy.

we can express it like this:

(1/1²)+(1/2²)+(1/3²)+(1/4²)+(1/5²)+(1/6²)+(1/7²)+(1/8²)+(1/9²)+…

thats and equal to somethis like 1.64493306684777…

So now we know that π²/6=1.64493306684777, so we can find out pi by clearing the equation and it’s end up like π²=(1.64493306684777)(6)

and that’s equal to 3.1415.

So now that we know how to calculate pi let’s code it.

So as you may notice it’s took the range from 1 to 1000000 that’s because it is and aproximation and we get closer to the actual real number of pi increasing the range of number to use.

I hope that you actually learned something in this post otherwise this is my first post and i will try to get better at it.

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