The perimeter of a sector of a circle of radius 8cm is 25cm.what is the area of sector...,,,!!!
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Step-by-step explanation:
arc length of sector = perimeter - 2*radius = 25–2·8 = 9 cm
θ = (arc length)/radius = 9/8 radians
area of circle = πr² = 64π cm²
area of sector = 64π·θ/(2π) = 36 cm²
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402.285 square cm.......
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