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!