You would find out the square root of the number twelve by making a guess as to what you think it is, and then multiplying it by itself. The square root of the number twelve is 3.465
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1. Locate the area of the wall where you want to paint the 12 squares. For twofoot squares, measure an eightfoot, sixinch width. Make two marks two feet apart. Measure a sixfoot
http://www.ehow.com/how_8217805_paint12chalkboar...

144
http://wiki.answers.com/Q/What_is_12_squared_by

A) The historical fact that, at one point in time, when calculation was laborious and multiplication was much easier than division/reciprocation to compute, reciprocals of nice numbers
http://www.quora.com/Mathematics/Whyisitthecon...
