This applet calculates the area of a sector. The two sliders vary the radius and the angle of the sector of a circle.[br][br]Use this applet to answer the following questions:[br][br]3. For what angle for a sector does the formula for the area of a sector look like the formula for the area of a circle?[br]4. For any given radius r, what is minimum area of a sector (nearest whole degree)?

Change the values of the angle of the sector and radius of the sector.[br]See how to find the area of the sector (blue area).