Derivation and Unfolding Animation of Circle Area

2014-02-18 09:26
This GeoGebra applet dynamically demonstrates the derivation of the circle area formula. Using sequences, rotations, and geometric transformations, it divides the circle into multiple sectors and unfolds them into an approximate rectangle. It visually illustrates the relationship between the circle's area, radius, and circumference, serving as an excellent tool for teaching geometry and limits.