SOUTHFIELD (CBS Detroit) – Mathematicians will celebrate Saturday’s date, and those who struggled with high school math may shudder, as the world recognizes Pi Day March 14 (3-14). The date represents the irrational number 3.14 which expresses the ratio of a circle’s circumference to its diameter, and for the only time this century, can be extended to include ten digits at 3/14/15 9:26:53 (which in actuality could be extended to an infinite number for those who recall their math classes). But while it may seem “irrational” to celebrate the day by those who are numerically inclined, Congress did recognize March...