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#1 Re: This is Cool » radius 3 mystery » 2013-04-10 11:02:41

Hi guys,

Thanks for your replies.

Yes i see what you mean... it only works for radius 3.

I like to ponder the significance of a mathematical event like this as it's similar to Kepler's third law
(sidereal periods of the planets squared equals distance of the planets cubed). I wasn't aware that this was also true for a sphere with radius 3. There may not be anything in it but i was just wondering...

HM

#2 This is Cool » radius 3 mystery » 2013-04-10 01:30:32

harmonique
Replies: 4

Hi

A sphere with radius 3 has an area of 113.0973 squared and a volume of 113.0973 cubed. The numbers are the same. Can anyone tell me why this is. It only happens with a radius of 3 or 30, 300 etc.

I suspect it has something to do with PI being close to 3.

Cheers
HM

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