jueves, 14 de marzo de 2013

Happy PI Day!


22/7 is one of the most famous approximations of PI = 3.1415926... To illustrate it, you can create a 22-paperclip chain circle and put a 7-paperclip chain across its diameter. The ratio between the length of the circle and its diameter is hence approximately equal to 22/7. Neat, ain't it?

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