Let the length of rectangle = 4x Then, breadth will be = 3x 2(l+b) = 84 2(4x + 3x) = 84 x = 6 then, the Length will be = 24 m then, the Breadth will be = 18 m Area of rectangle = 24 x 18 = 432m2 Side of square = (2/3) x 18 = 12m Area of square = 144m2 Hence, the Required difference is = (432 – 144) = 288m2
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