1. 11.3 Areas of Circles and Sectors
By the end of class you will be able to calculate the areas of circles, sectors, and shaded regions.

2. Where does the formula come from??

3. Find the area A circle with a radius of 5cm (exact answer)
A circle with a circumference of 50.24cm

4. Sectors A region of a circle bounded by radii and an arc.
Sector Area =

5. Find the area of a piece of a piece of pizza that comes from an 18” pie and has a central angle of 45-degrees

6. A sector has an area of 9. 4248cm2 and a radius of 3cm
A sector has an area of cm2 and a radius of 3cm. Find the measure of the corresponding arc.

7. Find the area of the shaded region

8. Find the area of the shaded region

9. Find the area of the shaded region

10. The Last Word: CIRCLE