MA, Stanford University
Teaching in the San Francisco Bay Area
Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts
The Greek letter pi is the mathematical constant for the number 3.1415...which is a non terminating, non-repeating decimal. An exact answer would leave the letter pi in it, but we often find a decimal approximation using the rounded value 3.14 The area for a circle is pi times the radius squared, and the circumference, which is like the perimeter of the circle, is either pi times the diameter or 2 pi times the radius.
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