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 ...

22 digits. The reason I remember this is because in 7th grade, my math teacher had a banner that circled the entire room with pi to a great many digits on it. Since I was bored a large portion of 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 ...