Add Yahoo as a preferred source to see more of our stories on Google. The number pi written out on a blackboard. A data storage company has decoded more than 100 trillion digits of pi — smashing the ...

Pi, a mathematical constant denoted by the Greek letter π, is the ratio of a circle's circumference C to its diameter d: π = C/d. The circumference of a circle is, in turn, equal to 2πr, where r is ...

When Ainsley Ramsey was in sixth grade she competed in a contest: Who could recite the most digits of pi? Ramsey was determined. "I did 100 digits and I won. And I remember getting a pie to bring to ...

The celebration of March 14 began as a weird Bay Area tradition. By Soumya Karlamangla Children in math classes across America will soon be discussing the magic of a circle’s circumference and, ...