Sectors of a Circle Acc. Alg/Geo. A Spring 2013. Area of a Circle The amount of space inside a circle. r A=  r 2.

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Presentation transcript:

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

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

Example 2 Find the area of the shaded region in 2 6 in 2 in A =   2 2 A =   8 2 A =   4 A =  in 2 A =   64 A =  in 2 A shaded = A – A= =

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

Area of a Sector

Example 3 Find the area of the sector. A  cm cm Q R

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