Examine the history of the number pi list the sources used to collect the data
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For about 4000 years, the ratio of circumference to diameter has been the same for all circles which is approximately equal to 3. Egypt and Babylon had the earliest written approximations of π.
Rhynd Papyrus gave the value of
as 
= 3.160493827....
In 499 AD, Aryabhata, the Indian astronomer used a value of 3.1416 in his Āryabhaṭīya.
The Wei Kingdom mathematician Liu Hui, around 265 AD, created a polygon-based iterative algorithm and used it with a 3,072-sided polygon to obtain a value of π of 3.1416
Source 1: https://en.wikipedia.org/wiki/Pi#History
Source 2: http://www.mathresource.iitb.ac.in/linear%20algebra/FinalPi_Method/PI-HTMLPAGE/Page02.htm
Rhynd Papyrus gave the value of
In 499 AD, Aryabhata, the Indian astronomer used a value of 3.1416 in his Āryabhaṭīya.
The Wei Kingdom mathematician Liu Hui, around 265 AD, created a polygon-based iterative algorithm and used it with a 3,072-sided polygon to obtain a value of π of 3.1416
Source 1: https://en.wikipedia.org/wiki/Pi#History
Source 2: http://www.mathresource.iitb.ac.in/linear%20algebra/FinalPi_Method/PI-HTMLPAGE/Page02.htm
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