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Web Results

en.wikipedia.org/wiki/Pi

Some approximations of

c2.com/cgi/wiki?ValueOfPi

Seriously, it does make sense to define "

mathforum.org/isaac/problems/pi1.html

Historians estimate that by 2000 B.C. humans had noticed that the ratio of circumference to diameter was the same for all circles. This discovery hinged on the ...

www.livescience.com/29197-what-is-pi.html

Apr 30, 2013

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

They used this method to find that

www.math.com/tables/constants/pi.htm

nrich.maths.org/2490

Read all about the number

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

You know what '

www.scientificamerican.com/article/the-long-search-for-the-value-of-pi/

Mar 14, 2016

math.stackexchange.com/questions/588141/how-is-the-value-of-pi-pi-actually-calculated

Dec 1, 2013

Answer

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.
More Info

www.geom.uiuc.edu

100,000 Digits of

www.mathsisfun.com

all the way around the circle) will be

www.piday.org

One Million Digits of