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Wolfram alpha
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Pi and the size of the Universe - Numberphile
JAMES GRIME: We love pi, of course. Everyone loves pi. But one of my favorite pi facts is-- and I think it's fun. You only need 39 digits of pi to be able to measure the circumference of the...
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#digits of pi
#observable universe
#wolfram alpha
#circumference
#hydrogen atom
#plussizemodel
#univers
#infinity times infinity
#connect four
#New Universe
#Science & Technology
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