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Who came up with pi?
Question
#109151. Asked by animelover33. (Sep 25 09 5:41 PM)
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serpa
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The earliest evidenced conscious use of an accurate approximation for the length of a circumference with respect to its radius is of 3+1/7th in the designs of the Old Kingdom pyramids in Egypt. The Great Pyramid at Giza, built c.2550-2500 B.C, was precisely 1760 cubits around with a height of 280 cubits (1760/280=2xPi). Egyptologists such as Professors Flinders Petrie [27] and I.E.S Edwards[28] have shown that these circular proportions were deliberately chosen for symbolic reasons by the Old Kingdom scribes and architects[29][30]. The same apotropaic proportions were used earlier at the Pyramid of Meidum c.2600 B.C. This application is archaeologically evidenced, whereas textual evidence does not survive from this early period.
http://en.wikipedia.org/wiki/Pi
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queproblema
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The earliest text I know of with a very approximate value of pi--the integer 3 --probably dating from the 6th century BC, is the Old Testament.
This describes the "molten sea," a huge laver:
"Then he made the sea of cast metal. It was round, ten cubits from brim to brim, and five cubits high, and a line of thirty cubits measured its circumference." I Ki. 7:23
http://www.biblegateway.com/passage/?search=1+Kings+7&version=ESV
The measure from brim to brim and the circumference are given in a one-to-three ratio.
"According to the Bible, it [Solomon's Temple]functioned as a religious focal point for worship and the sacrifices known as the korbanot in ancient Judaism. Completed in 960 BCE, it was destroyed by the Babylonians in 586 BCE."
http://en.wikipedia.org/wiki/Solomon%27s_temple
"A date of 550 B.C. appears reasonable for the completed Kings record."
http://www.earlyjewishwritings.com/1kings.html
(Scholars believe the story, or at least the one preserved in the Book of Kings, was written after the building was demolished.)
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