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Web Results

en.wikipedia.org/wiki/Pi

The number π is a mathematical constant, the ratio of a circle's circumference to
its diameter, ..... Liu later

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

In 1706 a little-known mathematics teacher named William Jones first used a
symbol to represent the platonic concept of

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

But did you ever wonder where

www.straightdope.com/columns/read/2036/who-invented-pi

Sep 17, 2002

www.exploratorium.edu/pi/history_of_pi/

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

The History of

mathforum.org/library/drmath/view/62626.html

Date: 04/10/2003 at 05:49:07 From: Katharine Subject:

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

Mar 13, 2013

www.ualr.edu/lasmoller/pi.html

That the ratio of the circumference to the diameter of a circle is constant (namely,

www.ask.com/history/invented-pi-5cc56400e24b573d

A mathematics teacher named William Jones is credited with first using the symbol π in 1706 to represent the concept of the ratio between a circle's ...

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.theguardian.com

Mar 14, 2015

www.scientificamerican.com

May 17, 1999

mentalfloss.com

Mar 12, 2013