Root 66 Square Root Funny Math Geek T-Shirt

Pi Day is Coming! Fun 3.14 T-Shirts For Math Nerds

We celebrate Pi Day each year on March 14, because 3.14 are the first digits in Pi. Pi is a mathematical constant that represents the ratio of a circle's circumference to its diameter. Pi is actually an irrational number, meaning it is an unending, patternless decimal.  Pi is often...