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      Question

      The ratio of length to breadth to

      height of a cuboidal box is 6:5:4. If the total surface area of the cuboid is 1,392 cm², then find its lateral surface area.
      A 692 cm² Correct Answer Incorrect Answer
      B 792 cm² Correct Answer Incorrect Answer
      C 455 cm² Correct Answer Incorrect Answer
      D 926 cm² Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let the dimensions be 5x, and 4x. Using the total surface area formula:

      Now, the lateral surface area:

      Thus, the lateral surface area is 792 cm2

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