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    Question

    Six cubes, each with a side length of 5 cm, are aligned

    in a straight row to form a cuboid. Determine the total surface area of the cuboid.
    A 520 cm² Correct Answer Incorrect Answer
    B 200 cm² Correct Answer Incorrect Answer
    C 650 cm² Correct Answer Incorrect Answer
    D 770 cm² Correct Answer Incorrect Answer

    Solution

    ATQ,

    Length of cuboid = 6 × 5 = 30 cm

    Breadth of cuboid = 5 cm

    Height of cuboid = 5 cm

    Total surface area of cuboid = 2 × (lb + bh + hl), where 'l', 'b', and 'h' are length, breadth, and height respectively.

    So, required area = 2 × (30 × 5 + 5 × 5 + 5 × 30) = 2 × (150 + 25 + 150) = 650 cm²

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