Webb1! rad 4 cm 2 cm A D C B E The diagram shows triangle ABC in which AB is perpendicular to BC.The length of AB is 4cm and angleCAB is ! radians. ThearcDE withcentreA andradius2cmmeetsAC atD andAB atE.Find, in terms of !, (i) the area of the shaded region, [3] (ii) the perimeter of the shaded region. [3] 2 1 rad O A B X r cm 1 The diagram shows … WebbSector OAB is blue in colour while semicircle BCD is gold in colour. Each necklace needs 5 pieces of this decorative material. The raw materials to produce this decorative material for 2 both colours are rectangular in shape with area 210 cm each. Laili is given a piece of raw material for each colour.
Solved Question 3 The diagram shows a sector AOB of a
WebbThe diagram shows sector OAB of a circle, centre 0 Angle AOB = 50 Sector OAB has area 20 pi cm2 Calculate the perimeter of sector OAB Give your answer correct to 3 … WebbSolomon Press C2I page 2 1. A 9.2 cm O B Figure 1 Figure 1 shows the sector OAB of a circle of radius 9.2 cm and centre O. Given that the area of the sector is 37.4 cm2, find to 3 significant figures (a) the size of ∠AOB in radians, (2) (b) the perimeter of the sector.(2) 2. The first three terms of a geometric series are (p − 1), 2 and (2p + 5) respectively, dictionaries in italian
The perimeter of the sector OAB shown in the following figure, is
Webb26 juli 2024 · Sector, segment and arc - Higher only Sometimes we need to know how to calculate values for specific sections of a circle. These can include arc lengths, the area … WebbThe diagram above shows the sector OAB of a circle of radius r cm. The area of the sector is 15 ... (a) Prove that r = 2√5. (3) (b) Find, in cm, the perimeter of the sector OAB. (2) The segment R, shaded in the diagram above, is enclosed by the arc AB and the straight line AB. (c) Calculate, to 3 decimal places, the area of R. (3) (Total 8 ... Webb15 sep. 2024 · As with arc length, we have to make sure that the angle is measured in radians or else the answer will be way off. So converting θ = 117 ∘ to radians and using r = 3.5 in Equation 4.3.1 for the area A of the sector, we get. θ = 117 ∘ = π 180 ⋅ 117 = 2.042 rad ⇒ A = 1 2 r2 θ = 1 2 (3.5)2 (2.042) = 12.51 m2 . For a sector whose angle ... dictionaries in list python