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    Question

    Five identical cubes, each measuring 6 cm along an edge,

    are placed in a row to form a larger cuboid. What is the total surface area of the resulting cuboid?
    A 520 cm² Correct Answer Incorrect Answer
    B 200 cm² Correct Answer Incorrect Answer
    C 650 cm² Correct Answer Incorrect Answer
    D 792 cm² Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Length of cuboid = 5 × 6 = 30 cm

    Breadth of cuboid = 6 cm

    Height of cuboid = 6 cm

    Total surface area of cuboid = 2 × (lb + bh + hl)

    So, required area = 2 × (30 × 6 + 6 × 6 + 6 × 30) = 2 × (180 + 36 + 180) = 792 cm²

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