How Many Digits of Pi Do You Really Need?

Pi is famously calculated to trillions of digits—but how many of them do we really, really need? This video demonstrates that, actually, just 39 will do. More »

Source: http://feeds.gawker.com/~r/gizmodo/full/~3/Va-xiQFW_vs/how-many-digits-of-pi-do-you-really-need

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