There's a nice way to show why the expresion for the area of a circle of radius R is:

Pi * R².

It has an comman relationship with the experation for the circumference of a circle, which is 2 * Pi * R (and that is a consequence of the description of Pi, which is known to be the ratio of the circumference of a circle to its diameter.)

Posted Date: 3/30/2013 2:59:04 AM | Location : United States

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