Changes

March 14 marks [[Pi Day]], a holiday on which the mathematical constant is celebrated.  The date, 3/14, comes from the first three digits of <big><math>\pi</math></big>; some people begin their celebration at 1:59 pm, derived from the following three digits.

March 14 marks [[Pi Day]], a holiday on which the mathematical constant is celebrated.  The date, 3/14, comes from the first three digits of <big><math>\pi</math></big>; some people begin their celebration at 1:59 pm, derived from the following three digits.

<big><math>\pi</math></big> Approximation Day is a similar holiday, celebrated on July 22 (from the approximation 22/7). <ref>[http://www.usatoday.com/tech/science/mathscience/2007-03-14-pi-day_N.htm USA Today (3/14/2007) - Pi-day]</ref>

<big><math>\pi</math></big> Approximation Day is a similar holiday, celebrated on 22nd July (from the approximation 22/7). <ref>[http://www.usatoday.com/tech/science/mathscience/2007-03-14-pi-day_N.htm USA Today (3/14/2007) - Pi-day]</ref>

<big><math>\pi</math></big> is approximately:

<big><math>\pi</math></big> is approximately: