en.wikipedia.org/wiki/Pi

The number π is a mathematical constant, the ratio of a circle's circumference to
its diameter, ... letter π, sometimes spelled out as pi, and derived from the first
letter of the Gree...

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

Succinctly, pi--which is written as the Greek letter for p, or --is the ratio of the
circumference of any circle to the diameter of that circle. Regardless of the circle's
...

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

You know what 'PI' is ... it's a number with the value 3.14, and it's used to find the
circumference and area of a circle. But did you ever wonder where PI came ...

blog.dictionary.com/pi/

Mar 13, 2014 ... The Latin name of the Greek letter π is pi, pronounced pie. The first ...... We did a
writing for each pi number we had to write a word. Such as 23 ...

www.reference.com/math/did-pi-come-194ed8837aff6faa

The concept of the mathematical constant pi dates back approximately 4000
years to ancient Mesopotamia. Babylonian mathematicians found that the area of
a ...

blog.press.princeton.edu/2014/03/18/pi-day-where-did-π-come-from-anyway/

Mar 18, 2014 ... You are here: Home / Math & Science / Pi Day: Where did π come from anyway?
... It is, after all, just the first letter of the word “periphery.” True ...

mathforum.org/dr.math/problems/word_pi.html

Dec 2, 1994 ... ... we were wondering if you could answer our question. Where did the word pi
come from, and how did someone determine it was equal to 3.14?

www.quora.com/Where-did-the-word-Pi-come-from-Who-coined-the-term-Pi-in-mathematics

Mar 20, 2016 ... The word "Pi" is the English word for the Greek letter π (in lower case) and Π (in
upper case). In the mid-18th century the famous mathematician ...

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

It is not clear how they found their approximation for pi, but one source (Beckman
) ... Word of this did not spread to the East, however, as the Chinese used the ..... (
Beckmann, 180) Whereas it took Shanks several years to come up with his 707 ...

www.primermagazine.com/2009/field-manual/know-it-all-the-origins-of-pi

Nov 9, 2009 ... You probably remember pi from 7th grade math class as a magical number ...
The symbol “π” and the term “pi” come from the Greek alphabet, where “π” is
merely ... Honor and Ethics: Does America Need a “Lending Code?