Archimedes made pi by using the method of exhaustion to calculate the area under the arc of a parabola with the summation of an infinite series. From the method of exhaustion, he gave a remarkably accurate approximation of pi (3.141593).
The more sides a polygon has, the closer the approximation approaches pi. Pn is the perimeter of a regular polygon with n sides circumscribed around a circle with diameter d.
The formula Archimedes used to calculate pi is: pi equals limits over number of sides to infinity multiplied by the perimeter of a regular polygon divided by the diameter.
make circles and discover pi
Archimedes made pi more precise
Archimedes
Pi
Archimedes
It is still being calculated. Supa-Dupa computers have calculated 'pi' to at least 50 billion places and still going. The ancients would have calculated 'pi' to at least 10 places. or more. estimates for pi are 3.14, 3.1416, 3.14159 or 22/7 They are all approximations. pi is an irrational number, which means it cannot be converted to a ratio/quotient. The Classical Greek mathematician , Archimedes, calculated 'pi' to a degrees of estimation.
Archimedes and the Greeks
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Archimedes
Archimedes (287-212 BC) was the first mathematician to make a serious attempt.
Archimedes was the first Western mathematician to make a serious attempt at calculating the value of pi. His estimated, that pi was between 3.1408 and 3.1429.