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The length of rectangle is three times of width. if perimeter is 84cm . find lengths​

Answer» BREADTH = 10.5cm, Length = 31.5cmStep-by-step explanation:Taking breadth and length as l and B respectively,l = 3bperimeter = 2(l + b) = 84cmSubstituting l with 3B, 2(3b + b) = 84cm 8B = 84cmb = 84/8 = 10.5cml = 3*10.5 = 31.5cmHence the breadth = 10.5cm and the length = 31.5cm.


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