11-3 Area of Circles and Sectors

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Presentation transcript:

11-3 Area of Circles and Sectors Vocab: Sector of a Circle: a region of a circle bounded by a central angle and its intercepted major or minor arc Formulas: Area of a Circle: πr² Area of a Sector: 𝑥 360 * πr²

Area of a circle Ex 1: What is the area of a circle with a diameter of 20 yds? Ex 2: Find the radius of a circle with an area of 95 square centimenters.

Area of Sector Ex 3: Find the area of the shaded region Ex 4: A circular pizza has a diameter of 12 inches and is cut into 8 congruent slices. What is the area of one slice?

Classwork/Homework P. 801 8-24 even