Web Results

en.wikipedia.org/wiki/Pi

Some approximations of

wiki.c2.com/?ValueOfPi

Seriously, it does make sense to define "

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

Dec 1, 2013

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

Mar 14, 2016

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

Mar 13, 2013

www.piday.org/million/

One Million Digits of

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

Apr 30, 2013

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

You know what '

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

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

They used this method to find that

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

mathforum.org

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.mathsisfun.com

all the way around the circle) will be