1. Sectors of a Circle Acc. Alg/Geo. A Spring 2013

2. Area of a Circle The amount of space inside a circle. r A=  r 2

3. Example 2 Find the area of the shaded region. 188.49 in 2 6 in 2 in A =   2 2 A =   8 2 A =   4 A = 12.57  in 2 A =   64 A = 201.06  in 2 A shaded = A – A= 201.06 - 12.57 =

4. Sector the region bounded by two radii of the circle and their intercepted arc.

5. Area of a Sector

6. Example 3 Find the area of the sector. A  18.85 cm 2 60 6 cm Q R

7. Example 4 Find the area of the sector. A  51.31 cm 2 6 cm 120 7 cm Q R