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Objectives: 1)To find the areas of circles, sectors, and segments of circles.

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Presentation on theme: "Objectives: 1)To find the areas of circles, sectors, and segments of circles."— Presentation transcript:

1 Objectives: 1)To find the areas of circles, sectors, and segments of circles.

2  The area of a circle is the product of π and the square of the radius.  A = πr²

3  A circular archery target has a 2 foot diameter. It is yellow except for a red bulls-eye at the center with a 6-in diameter. Find the area of the yellow region. Round to the nearest whole number.

4  How much more pizza is in a 12-in diameter pizza than in a 10-in pizza?

5  A sector of a circle is a region bounded by an arc of the circle and the two radii to the arcs endpoints.  You name a sector using one arc endpoint, the center of the circle, and the other arc endpoint.

6  The area of a sector is a fractional part of the area of the circle.  Formula:

7  Find the area of the sector. Leave in terms of π  Sector ACB

8  A chord is a line that goes from one point on a circle to another, not going through the center.  A part of a circle bounded by an arc and the segment joining its endpoints is a segment of a circle.

9 Area of Sector Area of Triangle Area of Segment - =

10  Find the area of the segment of the circle.


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