Does Pi Really Equal 2? 🤔 The Surprising Truth Revealed
Discover the fascinating thought experiment that challenges your understanding of Pi and geometry. Find out why Pi is not equal to 2 in this quick explainer!

Mathematical Visual Proofs
2.5M views • Mar 11, 2024

About this video
In this short, we show a thought experiment that arises by doubling the number of semicircles drawn in a semicircle but halving their radii. The process produces an infinite collection of smaller and smaller chains of more and more semicircles that always have combined circumference length equal to pi. If we think about the limiting process, it seems like maybe this technique shows that pi = 2. But Pi can definitely be shown to be greater than 3 - so where does this argument fail?
If you like this video, consider subscribing to the channel or consider buying me a coffee: https://www.buymeacoffee.com/VisualProofs. Thanks!
Here is a related false proof that shows root 2 is equal to 2:
https://youtube.com/shorts/owFwvyozcn8
This false argument was suggested to me by Jeff Stuart as a nice alternative to the more classic Pi = 4 argument.
#math #manim #visualproof #proofwithoutwords #circle #circumference #radius #pi #piday #shorts #infinite #falseproof
To learn more about animating with manim, check out:
https://manim.community
If you like this video, consider subscribing to the channel or consider buying me a coffee: https://www.buymeacoffee.com/VisualProofs. Thanks!
Here is a related false proof that shows root 2 is equal to 2:
https://youtube.com/shorts/owFwvyozcn8
This false argument was suggested to me by Jeff Stuart as a nice alternative to the more classic Pi = 4 argument.
#math #manim #visualproof #proofwithoutwords #circle #circumference #radius #pi #piday #shorts #infinite #falseproof
To learn more about animating with manim, check out:
https://manim.community
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Video Information
Views
2.5M
Likes
94.2K
Duration
0:59
Published
Mar 11, 2024
User Reviews
4.8
(490)