Copy of Area of a Sector
The following applet was designed to help you discover how to to calculate the area of a sector.
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) What does s represent? *Hint: We learned this in the last section (7.6). Substitute this into the formula for s.
5) The formula you should have arrived at is what we use to find the area of a sector of a circle.