Ahmes' Area of a Circle

This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com

1. What do you notice about the area of the circle as the diameter gets bigger and smaller?

2. Compare the area that was found using Ahmes's method to the area just left of the slider which is calculated using the formula πr². What do you find?

3. Why did Ahmes use 9 as the diameter in his problem?

Elizabeth Phillips, 2 December 2013, Created with GeoGebra