two equal cubes are placed adjointlyin a row find the ratio of total surface area of the new cuboid to that of the sum of the surface areas of two cubes
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let the side of the sq. is x
the total surface area of the cuboid is 2(2x ×x + x×x + 2x×x )
the surface ar. of cube is 6× x×x
ratio is 5÷6
the total surface area of the cuboid is 2(2x ×x + x×x + 2x×x )
the surface ar. of cube is 6× x×x
ratio is 5÷6
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