KINGSTON, LUZERNE COUNTY (WBRE/WYOU)— The “Pi” that students at Good Shepherd Academy are singing about is not a slice of apple pie. It is “Pi day” to celebrate a circle’s circumference of 3.14. March ...

A familiar relationship—the derivative of the area of a circle equals its circumference—is extended to other shapes and solids. Journal Information The Mathematics Teacher (MT), an official journal of ...