it was when the eyptions got atttack by there enemy was when they found it out so it is sir comes alot
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Egyptians and Mesopotamians and babylonians
The Hindus created PI
First we have to find the radius: pi*radius2 = 400*pi square meters Divide both sides by pi and then square root both sides: radius = 20 meters 2*pi*radius or pi*diameter = circumference 2*pi*20 = 40*pi meters
The first written evidence that has been found of people finding the value of pi is in an Egyptian papyrus and Babylonian tablets about 1900 BC, however, some historians believe that the ratio of the perimeter to height of pyramids built in Egypt as early as 2613 - 2589 BC suggests that Egyptians already had made approximations of the value of pi at that time.
To find a number in Pi, see the link below