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Three equal cubes are placed adjacentl...

Three equal cubes are placed adjacently in a row. The ratio of the total surface area of the resulting cuboid to that of the sum of the surface areas of three cubes, is (a) 7:9          (b)  49:81         (c)  9:7      (d)  27:23

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RD SHARMA ENGLISH-SURFACE AREA AND VOLUME OF A CUBOID AND CUBE-All Questions
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