The answer to the pi = 4

Okay, the reason why it’s wrong? It’s in the video, but if you ignore videos, here is the answer.

Zoom in on one of the corners of the square with a circle part in it.

Oh wait! The circle on the right is not even a circle!

So the ‘circle’ is not even a circle with perimeter pi, but is actually an ‘infinigon’ (cleverly stated by Vi Hart – oh wait, it’s in Wiktionary, so probably not) with perimeter 4.


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