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Area of a sector of a circle of radius 15 cm is 30 cm2 . Find the length of the arc of the sector. |
Answer» Given: Radius (r) =15 cm, area of sector = 30 cm2 To find: Length of the arc (l). Area of sector = ((lengh of the arc) x radius)/2 ∴ 30 = (l x 15)/2 ∴ l = (30 x 2)/5 = 4cm ∴ The lenght of the arc is 4cm. |
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