Use the slider to partition the circle and look at how the sectors rearrange to derive a formula for the area.
What does this applet say?!
Explain in your words what is happening in this applet and how this process may help find the formula for the area of a circle.
Move the sliders around...
Any further insights?
If this new applet clarified any ideas about the area of a circle for you, please add those insights below.