# Approximating Pi

Move slider

*n*to the right and observe what happens to the inscribed polygon.The applet above shows the relationship between the area of a circle and the inscribed polygon. Notice that as the the number of sides (

*n*) of the inscribed polygon increases, its area gets closer and closer to the area of the circle which is equal to . This approximation is called the method of exhaustion. It was developed used by Archimedes.