2. the form of fractions, the number pi in 27/7 or 335/113 (approximate numbers) and is written in the form of approximately 3.1415926535.3. The first calculations of the number pi is made by Archimedes in Syracuse (287-212 BC), one of the greatest mathematicians of ancient world.4. the Swiss mathematician Leonhard Euler (1707-83) was to be the first to introduce the symbol pi
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