Happy “Pi” Day?

| March 14, 2012

So, today everyone has been referencing some “Pi Day”.  Upon further investigation, I realized the reference is in regard to today’s date: 3/14.  Clever…sort of.  Pi (Π), often rounded off to 3.14, is actually a mathematical constant used to calculate the area of a circle (A= Π r²).  It is a never-ending number. The first 100 digits look like this:

3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679

Scary, eh? If you’re still confused or would like to learn more about Π, you can check out the following items found online in EDUCAT, the TC Catalog:

EDUCAT:

Author Christopher G. Gibson
Title Elementary Euclidean geometry : an introduction
Imprint

Ebook available:

Cambridge, UK : Cambridge University Press, 2003

http://site.ebrary.com.eduproxy.tc-library.org:8080/lib/teacherscollege/docDetail.action?docID=10124682

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Author: Robin Hartshorne
Title Euclid and beyond
Ebook available: http://site.ebrary.com.eduproxy.tc-library.org:8080/lib/teacherscollege/docDetail.action?docID=10002167