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Discovering Pi

'Give meaning to the existence of Pi by exploring the geometric phenomenon from which it comes' The enigmatic Pi is a fascination for mathematicians, but it can be a mystery to lots of people. Its decimal places go on forever and and so it is hard to define. It has something to do with circles and there is a button for it on most calculators. Its symbol is a Greek letter but where does it actually come from? How did...

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