The number pi (π) appears in the most unlikely places. It can be found in circles, of course—as well as in pendulums, springs and river bends. This everyday number is linked to transcendental ...

One of the oldest calculus problems, finding the area of a circle, can be visualized using a pizza. By dividing it up into ever smaller slices and laying them out next to one another, eventually you ...

Convenience store chain Circle K, which has more than 4,000 stores in 22 states, is giving members of its Inner Circle loyalty program 40 cents off per gallon on Thursday, Aug. 21. To get the Inner ...