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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, .... This definition of π implicitly makes

answers.yahoo.com/question/?qid=20110313121210AAyorhq

Mar 13, 2011

www.mathsisfun.com/numbers/pi.html

Finding

study.com/academy/lesson/pi-number-usage-quiz.html

Learn where the number

www.tulsaworld.com/business/fyibusiness/pi-common-in-everyday-life-not-just-dessert/article_d1e06850-b460-5ea6-8417-29bed2386234.html

Mar 14, 2014

mathforum.org/library/drmath/view/57045.html

The children asked

www.reference.com/math/pi-used-today-732a502158421572

In 2014, the record for calculating digits of

mathworld.wolfram.com/PiFormulas.html

mathforum.org/dr.math/faq/faq.pi.html

www.cnet.com/how-to/25-fun-things-to-do-with-a-raspberry-pi/

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www.universetoday.com

Mar 14, 2014

lightyears.blogs.cnn.com

Mar 13, 2012

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