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The earliest known textually evidenced approximations of pi date from around 1900 BCE; they are 25/8 (Babylonia) and 256/81 (Egypt), both within 1% of the true value.

The Greek letter pi was first used to represent the ratio of the circumference of a circle to its diameter in 1709 by mathematician William Jones.
en.wikipedia.org/wiki/Pi

The digits appear to be randomly distributed; however, to date, no proof of this
has been **discovered**. Also, π is a transcendental number – a number that is not ...

www.pcworld.com/article/191389/a-brief-history-of-pi.html

Mar 13, 2013

www.historytoday.com/patricia-rothman/william-jones-and-his-circle-man-who-invented-pi

William Jones and his Circle: The Man who invented

britton.disted.camosun.bc.ca/pi/piorigin/piorigin.html

You know what '

www.math.rutgers.edu/~cherlin/History/Papers2000/wilson.html

The earliest value of

www.geom.uiuc.edu/~huberty/math5337/groupe/overview.html

The ancient Babylonians knew of the existence of

www.quora.com/Who-discovered-pi

Mar 10, 2013

www.scientificamerican.com/article/what-is-pi-and-how-did-it/

May 17, 1999

www.exploratorium.edu/pi/history_of_pi/

Popular Q&A

Q:
Who discovered pi and how?

A:
Being a number, pi (p=3.14. isn't really an invention. If anything, it's a
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Source:
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Q:
WHO DISCOVERED PI ?

A:
The modern symbol for pi was first by William Jones, an English mathematician. Ancient Greeks and
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Source:
www.chacha.com

Q:
Who discovered Pi , and how?

A:
Nobody knows how pi was discovered . We do know that pi has been known for over 4000 years! Text again! report this answer. Updated on Wednesday, February 01 201...
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Source:
www.kgbanswers.com

Q:
Who discovered pi ?

A:
The value of π has been known in some form since antiquity. As early as the 19th century BC, Babylonian mathematicians were using π = 25⁄8, which is within 0.5%...
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Source:
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Q:
Who discover pi and when.

A:
Well, Archimedes, but . Historians believe that most of the ancient civilizations, such as the Egyptians, Indians and Greeks had figured out Pi , but Archimedes ...
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Source:
askville.amazon.com