11.5 Area of Circles and Sectors. Theorem The equation for the Area of a Circle Area equals radius squared times pi.

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Presentation transcript:

11.5 Area of Circles and Sectors

Theorem The equation for the Area of a Circle Area equals radius squared times pi.

Theorem The equation for the Area of a Circle Area equals radius squared times pi.

Definition of a Circle Sector A circle sector is a fraction of the circle enclosed by two radii and an arc.

Theorem The Equation for the Area of a Sector

Theorem The Equation for the Area of a Sector

Find the Radius The Sector Area is

Find the Radius The Sector Area is

Find the Radius The Sector Area is

Find the Radius The Sector Area is

Find the Shaded Area Hint : find the Area of the Circle – the Area of the triangle

Find the Shaded Area Hint : find the Area of the Circle – the Area of the triangle

Find the Shaded Area Hint : find the Area of the Circle – the Area of the triangle

Find the Shaded Area Hint : find the Area of the Circle – the Area of the triangle

Homework Page #10 – 28 even, 31 – 37, 40, 41,