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    Question

    Six cubes, each with side 5 cm, are placed side by side in

    a straight line to form a cuboid. What is the total surface area of the resulting cuboid?
    A 410 cm² Correct Answer Incorrect Answer
    B 512 cm² Correct Answer Incorrect Answer
    C 650 cm² Correct Answer Incorrect Answer
    D 770 cm² Correct Answer Incorrect Answer

    Solution

    ATQ,

    Length = 6 × 5 = 30 cm

    Breadth = 5 cm

    Height = 5 cm

    Total surface area = 2 × (30 × 5 + 5 × 5 + 5 × 30)

    = 2 × (150 + 25 + 150) = 2 × 325 = 650 cm²

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