Web Results

en.wikipedia.org/wiki/Pi

Some approximations of

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.mathscareers.org.uk/article/calculating-pi/

Ancient and modern methods can be used to calculate

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

You know what '

www.mathsisfun.com/numbers/pi.html

all the way around the circle) will be

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

Apr 30, 2013

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

Regardless of the circle's size, this ratio will always equal

www.quora.com/How-is-the-value-of-pi-calculated-1

Spigot algorithms: A spigot algorithm is a particular type of algorithm used to
compute the

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

www.wikihow.com/Discover-Pi-for-Yourself-Using-Circles

How was the math constant called "pi" discovered -- and could you have
discovered it? Well, yes, with a ... How can you find the

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

math.stackexchange.com

Dec 1, 2013

www.geom.uiuc.edu

100,000 Digits of

www.scientificamerican.com

The mathematical odyssey, plus a guide to calculating