Pi is 4?

You know what, Pi is actually 4.

Wait, what?

Yes. Let me explain how.

First, we draw a square circumscribing a circle as shown on the left. We know this square’s side length is 2r, and the sum of sides are 8r. However, by doing the process of making stairs let’s the square remain the same perimeter. Like this, on the right.

While we keep doing this process, the stairs will be so small that are almost the edge of the circle, while its perimeter is still 4.

However, we sure know pi is 3.1415926… so Why?