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'pi' was NOT invented. It was DISCOVERED.

Going back to ancient history ; the Sumerian Civilisation ; it was found that the diamter of a circle was always directly related to the circumference.

This relationship was found to be 3.141592.....

Later , in the Classical Greek Civilisation , 'pi' was applied. 'pi' is the small case letter 'p' from the Classical Greek alphabet. It refers to constant of PROPORTION of circles.

Today we have the two equations'

C = pi d

&

A = pi r^(2)

pi is an IRRATIONAL number, which means the decimals go to infinity, AND the decimal digits are not in any regular order.

Supa=Dupa computers have calculated 'pi' to 50 billion places and still going!!!!!

In school, you are probably given pi = 3.14 or 3.1416 or 22/7 , but these are only approximations.

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lenpollock

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2w ago

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More answers

because its used to calculate areas of circle, circumferences and so on

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Wiki User

12y ago
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Q: Why was pi invented?
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