en.wikipedia.org/wiki/Pi

The number π is a mathematical constant, the ratio of a circle's circumference to
its diameter, .... The set of complex numbers at which exp(z) is equal to one is
then an (imaginary) arithm...

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

Regardless of the circle's size, this ratio will always equal pi. In decimal form, the
value of pi is approximately 3.14. But pi is an irrational number, meaning that its ...

www.mathsisfun.com/numbers/pi.html

circle radius=1, half circumference=pi ... 314m (to the nearest m) ... In fact π is not
equal to the ratio of any two numbers, which makes it an irrational number.

www.quickanddirtytips.com/education/math/314-fun-facts-about-pi

Mar 11, 2016 ... How did you celebrate Pi Day this year? ... By which I mean: Why is pi equal to
approximately 3.14? Pi is approximately 3.14 simply because ...

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.quora.com/Whats-the-314th-digit-of-pi

May 8, 2015 ... Pi (upto the first 314 digits) is ... Pi (upto the first 314 digits) is
3.14159265358979323846264338327950288419716939 ... Is pi equal to 22/7?

www.nbclosangeles.com/news/national-international/Pi-Day-2016-314-Things-to-Know-Freebies-371966492.html

Mar 14, 2016 ... Monday is Pi Day, a national celebration of the mathematical concept, which is
the ratio of a circle's circumference to its diameter and equals ...

www.piday.org/

Pi Day is celebrated on March 14th (3/14) around the world. ... Pi has been
calculated to over one trillion digits beyond its decimal point. ... 314-pie-via-
zazzle ...

geekologie.com/2010/04/omg-omg-omg-314-in-a-mirror-sp.php

Apr 2, 2010 ... 3.14 in a mirror spells pie! Black magic! Sorcery! Say -- you think whoever
invented pi knew that? Because it sounds like some serious Illuminati ...

www.moomoomath.com/Circumference.html

Remember the general form of the equation of a circle equals,. (x-h)^2 ... Pi is
calculated by dividing the circumference of a circle by the diameter of the same
circle. ... What is the radius of a circle with a circumference of 314 units? Step 1.