Chapter 10: Area
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Transcript of Chapter 10: Area
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Chapter 10:AreaSection 10-7:
Areas of Circles and Sectors
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Objective:To find the area of circles, sectors, and segments of circles.
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VocabularySector of a CircleSegment of a Circle
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Theorem 10-11:“Area of a Circle”
The area of a circle is the product of pi and the square of the radius.
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Find the Area of the Circle
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Find the Area of the Circle
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Find the Area of the Circle
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Sector of a CircleA sector of a circle is a region bound by an arc of the circle and two radii to the arc’s endpoints.
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Theorem 10-12:“Area of a Sector of a Circle”The area of a sector of a circle is the product of the ratio of the measure of the arc and 360 times the area of the circle.
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Finding the Area of a SectorFind the area of Sector XOY
60° 12
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Segment of a CircleA part of a circle bound by an arc and the segment joining its endpoints is a segment of a circle.
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Area of a SegmentTo find the area of a segment we have to find the area of a sector and subtract the area of a triangle. A
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