Possible Duplicate:
Is value of $\pi = 4$?

I know that you can take area out of a square without changing it's perimeter. Now, here's this problem:

Draw a circle with dia = 1;

Draw a square around with perimeter = 4, side = 1;

Remove the corners, still perimeter is same.

repeat this thing infinite times, you have to see the image below.

http://i.stack.imgur.com/qUYei.jpg

I know there is something missing, but what is it? I am not a mathematician, not even the worst one. Please be kind and answer in English as much as possible. Thanks