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    Question

    The length of a cuboid is 8 cm and breadth is 7 cm. If

    the volume of the cuboid is 392 cubic cm, find 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 None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Length of cuboid = 8 × 7 = 56 cm

    Breadth of cuboid = 7 cm

    Height of cuboid = 7 cm

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

    So, required area = 2 × (56 × 7 + 7 × 7 + 7 × 56) = 2 × (392 + 49 + 392) = 1,666 cm²

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