Answers

2014-03-07T13:25:05+05:30
It wasn't invented rather its been discovered by the ancient mathematicians, like Greece, Egypt, Persia, indian. But between all of them Egypt and india contribute best to discover the value of pi which is constant for everyway. And between them one is The Great Aryabhatt. 
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2014-03-07T13:41:56+05:30
Aryabhatt invented the value of pi
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