Area of a Sector

Area, Circle
The following applet was designed to help you discover how to to calculate the area of a sector. Use this applet as a "check", so to speak, for the examples you work out on today's warm-up. Then answer the questions that appear below the applet.
Questions: 1) How would you answer the question that appears on the right side of the applet? 2) What is the formula for the area of the polygon name you gave as a response to this question? 3) Substitute appropriate values (seen in the sector on the right) into this formula to help derive the formula for the area of a sector. What do you get? 4) Does using this formula work to obtain the areas of the sectors asked in the questions on your warm-up sheet? Try it out!