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en.wikipedia.org/wiki/Pi

The number π is a mathematical constant, the ratio of a circle's circumference to its diameter, ..... Integers: 3; Fractions: Approximate fractions include (in order of increasing accuracy) ..... Series that converge even faster include Machin's series and Chudnovsky's series, the latter producing 14 correct decimal digits per term.

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 the symbol used in mathematics to represent a constant — the ratio of the ...

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 year. Symbolized by the Greek letter “π,” Pi is the symbol used in ...

www.al.com/news/index.ssf/2017/03/pi_day_2017_freebies_facts_and.html

Mar 14, 2017 ... March 14 - or 3/14 - is Pi Day in honor of the Greek letter that represents the symbol used in mathematics to represent the ratio of the ...

www.nbcnews.com/business/consumer/got-3-14-celebrate-pi-day-deals-pizzas-pies-chicken-n733271

Mar 14, 2017 ... “March 14 also happens to be Albert Einstein's Birthday (go figure), so social media is having a moment with a lot of punny memes and jokes, ...

askdruniverse.wsu.edu/2016/03/08/pi-3-14-3

Mar 8, 2016 ... Dear Curious Readers,. It's almost March 14. You know what that means: Pi Day, as in 3/14, or 3.14159265359 and so on. I met up with my ...

www.usatoday.com/story/tech/talkingtech/2017/03/13/everything-you-need-know-pi-day/99119560

Mar 13, 2017 ... March 14 is a time to pay tribute to mathematics. Also, pie.

www.wral.com/pi-day-offers-for-pizzas-and-pies-on-tuesday-3-14-/16582241

Mar 14, 2017 ... There are some tasty deals taking place Tuesday, March 14 for Pi Day including a number of pizzas and pies for only $3.14!

abcnews.go.com/Business/celebrate-national-pi-day-deals/story?id=46088569

Mar 14, 2017 ... Happy Pi Day! While math nerds may have March 14 — 3/14 — circled on their calendars for the annual celebration of that quantity with an ...