The ground floor of a room is of rectangular shape. Its lengthis two and half time of its breadth. Ef perimetet of this ground is 70 meyers then find its length.
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Step-by-step explanation:
P = 2(L + W) = 2(5W/2 + W) = 2(7W/2) = 7W => 70 = 7W => W = 10m, L = (5/2)(10) = 25 m.
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