en.wikipedia.org/wiki/Pi

The number π is a mathematical constant, the ratio of a circle's circumference to its diameter, .... This is also called the "Feynman point" in mathematical folklore, after ... at any point yields a rational approximation for π; the first four of these are 3, 22/7, ...... It produces about 14 digits of π per term, and has been used for several ...

en.wikipedia.org/wiki/Pi_Day

Pi Day is an annual celebration of the mathematical constant π (pi). Pi Day is observed on March 14 since 3, 1, and 4 are the first three significant digits of π.

www.piday.org

Pi Day is celebrated on March 14th (3/14) around the world. Pi (Greek letter “π”) is ... Pi has been calculated to over one trillion digits beyond its decimal point.

www.geom.uiuc.edu/~huberty/math5337/groupe/digits.html

100,000 Digits of Pi Pi Logo. 3.141592653589793238462643383279502884197169399375105820974944592307816406286 ...

www.wired.com/2015/03/area-circle-value-pi

Mar 14, 2015 ... It is once again Pi Day (March 14 or 3/14 in USA date format). I would just like to point out that the fractional representation of 22/7 is better than ...

www.wired.com/2016/03/six-things-probably-didnt-know-pi

Mar 14, 2016 ... OK, it's a bit of a stretch because 3/14 looks like a fraction and not Pi. ... Expanding this function about the point x = 1 should be equal to π/4.

www.cbsnews.com/news/pi-day-nerds-celebrate-314-march-14

Mar 14, 2017 ... Calling all math lovers: it's Pi Day, celebrated on March 14, or 3/14, every ... been calculated to over one trillion digits beyond that decimal point.

www.khanacademy.org/math/basic-geo/basic-geo-area-and-perimeter/area-circumference-circle/a/area-of-circles-review

Want a review of circle vocabulary terms (like pi, radius, and diameter)? Check out .... 1 4 3.14 3.143, point, 14 for π \pi πpi and enter your answer as a decimal.

www.khanacademy.org/math/basic-geo/basic-geo-area-and-perimeter/area-circumference-circle/a/circumference-review

Want a review of circle vocabulary terms (like pi, radius, and diameter)? Check out .... 1 4 3.14 3.143, point, 14 for π \pi πpi and enter your answer as a decimal.

metro.co.uk/2017/03/14/happy-international-pi-day-heres-what-it-looks-like-to-100000-decimal-points-6508270

Mar 14, 2017 ... Here's what it looks like to 100,000 decimal points ... The best International Pi Day is long behind us now – 3/14/12, but scroll down to find out ...