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    Question

    Seven cubes, each of edge 7 cm, are attached in a row to

    make a cuboid. Find its total surface area.
    A 1470 cm² Correct Answer Incorrect Answer
    B 1544 cm² Correct Answer Incorrect Answer
    C 2650 cm² Correct Answer Incorrect Answer
    D 1792 cm² Correct Answer Incorrect Answer

    Solution

    ATQ,

    Length = 5 × 6 = 30 cm

    Breadth = 6 cm

    Height = 6 cm

    Total surface area = 2 × (30 × 6 + 6 × 6 + 6 × 30)

    = 2 × (180 + 36 + 180) = 2 × 396 = 792 cm²

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