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Message: <blockquote data-quote="imhotep" data-source="post: 28069228" data-attributes="member: 562115">You are mostly on the forum. I was wondering why you haven't responded.. [USER=400100]@pdn.ac.lk[/USER] did. Thanks for the write up.Another instance where π^2 appears is with the 3-sphere.The 3-dimensional surface volume of a 3-sphere of radius r is 2.π^2.r^3 while while the 4-dimensional hypervolume (the content of the 4-dimensional region bounded by the 3-sphere) is (1/2).π^2.r^4Ref:  <a href="https://en.wikipedia.org/wiki/3-sphere" target="_blank">https://en.wikipedia.org/wiki/3-sphere</a>PS: Thanks for eveyone who ressponded. As [USER=400100]@pdn.ac.lk[/USER] mentioned it is an interesting question. Many came up with interesting solutions too. Only one certified moron who seem to think he's Einstein was far too retarded even to comprehend the sentence "Just like π is the area of a unit circle, what could be a similar instance for π^2?"  - this nincompoop went on ranting claiming to provide hundreds of formulae with π^2.  At least he bumped the thread. Thanks for that.(I have never claimed that I am a mathematician. I am not. However, it's one of my hobbies. )</blockquote>

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