This is an introduction to finding the arc length and area of sectors of circles. Students should have the formulas for Circumference and Area of circles.

This site provides practice problems for calculating central angles and calculating arc length.

Try these three problems regarding area of sectors, length of arcs, and central angles. The problems will challenge and intrigue sharp geometry students. Detailed written solutions are included.

After demonstrating how to find arc length and sector area using radian measures, student can practice the concepts with the examples provided and play an interactive game involving angular velocity.