Thursday marks Pi Day, otherwise known as 3.14, which is the ratio of a circle's circumference to its diameter. While the average person can easily remember the rounded 3.14 ratio, the exact ratio has ...

It’s deliciously reliable, like cherry pie: Divide the circumference of any circle in the universe by its diameter, and you will always get the same number, pi, aka the Greek letter π. In fact, NASA ...

BURNSVILLE, Minn. — Whether you celebrate March 14 for the pi, or the pie, the celebration at Chuck Croatt's Burnsville math classroom had you covered on Friday. "Go ahead and grab a piece of pie," ...