WebFirst we need to convert angle given in degrees to radians: θrad = Angle In Degrees ∗ π 180. θrad = 45^o ∗ 3.14 180. θrad = 141.3 180. θrad = 0.785rad. Now using the area of a sector of a circle formula: Area Of Sector = α ∗ r2 2. Putting the value given in the statement: Area Of Sector = 0.785 ∗ (3)2 2. WebMath; Other Math; Other Math questions and answers (i) Convert 35∘ to radians, leaving your answer in terms of π. (ii) Use your answer from part (d)(i) to find the perimeter of a sector between a circle of radius 5 cm and another circle of radius 10 cm determined by an angle α of 35∘ - the sector is outlined in a solid black line in Figure 7.
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WebWe can calculate the perimeter of a sector by adding together the lengths of the two radii and the arc length of the sector. E.g. Calculate the perimeter of the below sector to 1 1 … WebJan 31, 2024 · Perimeter of a sector of ellipse formula p = π ( a + b) ( 1 + 3 h 10 + 4 − 3 h) where, a is the major ellipse axis b is the minor ellipse axis We will apply the following … take offence翻译
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WebTo find the area and perimeter of minor sector OAB in terms of π : Area of sector OAB = θ 360 ∘ × π r 2 = 120 ∘ 360 ∘ × π ( 5) 2 = 25 3 π cm 2 Length of arc AB = θ 360 ∘ × 2 π r = 120 ∘ 360 ∘ × 2 π ( 5) = 10 3 π cm ∴ Perimeter of sector OAB = 10 3 π + 5 + 5 = ( 10 3 π + 10) cm Example - Major sector (in radians) WebThe area of sector can also be expressed in terms of pi (π). For example, if the radius of a circle is given as 4 units, and the angle subtended by the arc for the sector is 90°, let us find the area of the sector in terms of pi. Area of sector = (θ/360º) × πr 2. Substituting the values in the formula, Area of sector = (90/360) × π × 4 2. WebArea of sector = θ 360 ∘ × π r 2. If is measured in radians, then “the area of a sector of a circle formula” is given by. Area of sector = 1 2 × θ × r 2. Perimeter of sector = 2 r + θ 360 × 2 π r. twitch banned mizkif