en.wikipedia.org/wiki/Pi

The number π is a mathematical constant, the ratio of a circle's circumference to
its diameter, ..... Although the simple continued fraction for π (shown above) also
does not exhibit a...

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 ...

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
...

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 ...

www.ask.com/youtube?q=Where Did Pi Come from?&v=TlY-Sh9Rzas

Mar 4, 2011 ... visit my site: http://www.pythagoreanmath.com Video on how to calculate pi by
Archimedes' method ...

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 ... So the
symbol (a relatively modern one, of course) does not fool the ...

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?

www.exploratorium.edu/pi/history_of_pi/

Pi has been known for almost 4000 years—but even if we calculated the number
of seconds in those 4000 years and calculated pi to that number of places, we ...

mathforum.org/library/drmath/view/52483.html

I was wondering how exactly the math notation pi was derived, and whoever
derived it, why did he make up that symbol for pi?

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

He did not even use his own formula in his calculation of pi. .... (Beckmann, 180)
Whereas it took Shanks several years to come up with his 707 digits, and ...