# Circle Area Approximation

Move slider

*r*to change the length of the radius and move slider*n*to the extreme right. What do you observe?Linda Fahlberg Stojanovska, August 2011, Created with GeoGebra

The applet above shows that as the number of divisions of a circle with radius r increases, the sectors can be arranged into a rectangle with base π*r* and base *r*.

**Snapshot**