Web Results

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 number π is a mathematical constant, the ratio of a circle's circumference to its diameter, ... series, was not available until a millennium later, when in the 14th century the Madhava–...

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

Mar 13, 2013

www.reference.com/math/discovered-pi-math-6731bb9b0528a07

The identity of the first person to

www.quora.com/Mathematics-Who-discovered-pi

If you mean who introduced the symbol

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

William Jones and his Circle: The Man who invented

www.whodiscoveredit.com/who-discovered-pi.html

It is important to know the people

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.exploratorium.edu/pi/history_of_pi/