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The perimeter of a certain sector of a circle is equal to half of the circle of which it is a sector. The circular measure of one angle of the sector is: Q. The length of the perimeter of a sector of a circle is 20cm.Give an expression for area of sector in terms of r (radius of the circle) and find maximum area of sector. Q. The perimeter of a ...
The radius of the circle is 7 inches and the angle is 60°. So, let us use the area of sector formula. The area of sector = (θ/360°) × π r 2 = (60°/360°) × (22/7) × 7 2 = 77/3 = 25.67 square units. Therefore, the area of the minor sector is 25.67 square units. Example 2: An umbrella has equally spaced 8 ribs.
sector: [noun] a geometric figure bounded by two radii and the included arc of a circle. a subdivision of a defensive military position. a portion of a military front or area of operation. an area or portion resembling a sector. a sociological, economic, or political subdivision of society.
Illustrated definition of Sector Graph: Another name for Pie Chart
Aug 22, 2020 · A sector of a circle is the union of an arc and the two radii joining the end points of the arc to the centre. So a sector has length but no area. By area of a sector we would mean, by convention, the area of the region bounded by the sector. The advantages of Definition 2 are many; e.g. the definition follows the same pattern as in definitions ...
If you're asking for the area of the sector, it's the central angle of 360, times the area of the circle, for example, if the central angle is 60, and the two radiuses forming it are 20 inches, you would divide 60 by 360 to get 1/6. And solve for area normally (r^2*pi) so you would get 400*pi, than divide by 6, you would get around 209.
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- Sal Khan
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