Hi, Luke M!
Let me see...
images...
http://pictures.mastermarf.com/blog/2009/090316-math-jokes.jpg
http://rlv.zcache.de/pizza_volumen_...9209346e7ae295df7b096da1c_v9wf3_8byvr_512.jpg
http://www.urbanjunglecomic.com/Comics/2010-07-22-Happy-Pi-Day!.png
http://brownsharpie.courtneygibbons.org/wp-content/comics/2011-03-14-pi-day-resized.jpg
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texts...
Odd Fact: Albert Einstein was born on Pi Day in 1879.
Mathematician: Pi r squared”
Baker: No! Pies are round, cakes are square.
"Mommy, Mommy, why I don't walk more than spin?"
"Boy, if you do not shut up I'll nail your other foot to the floor"
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algorithms...
John Wallis
= 2 ( 2/1 x 2/3 x 4/3 x 4/5 x 6/5 x 6/7 ....)
Gottfried Wilhem von Leibniz
= 4(1/1-1/3+1/5-1/7+1/9...)
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history...
Ancient Egypt:
pi=3.1605
Babylone:
pi=3
China:
pi=3.1447, pi=3.10, pi=3.14
192 sides polygon evolutioned to 3072 sides -----> pi=3.14159
V century BC, astronomer Tsu Ch'ung -----> pi=355/113=3.1415192
9
In Occident we have to wait 1000 years to reach that level.
Europe:
Archimedes: 3 + 10/71 < pi < 3 + 1/7
XVII century, Lambert & Legendre demonstrated that pi isn't a rational number
In 1593 Dutch mathematician and military architect Van Clenen determinated 20 and then 35 decimals (was the 1st to outperform Kashi Central Asia mathematician)
Middle East:
XV century Arabs obtained 17 decimals through polygons inscribed in a circumference
1st half of XiV century Kashi came with a 3072 sides polygon
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strange things...
1983, Rajan Mahadevan recited 31811 decimals
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Regards!