New 55% Off on All Courses - Enroll Now! Click Here

    Question

    Nine cubes with each side measuring 3 cm are aligned in

    a straight row to build a cuboid. What is the total surface area of the resulting cuboid?
    A 470 cm² Correct Answer Incorrect Answer
    B 342 cm² Correct Answer Incorrect Answer
    C 250 cm² Correct Answer Incorrect Answer
    D 192 cm² Correct Answer Incorrect Answer

    Solution

    ATQ,

    Length = 9 × 3 = 27 cm

    Breadth = 3 cm

    Height = 3 cm

    Total surface area = 2 × (27 × 3 + 3 × 3 + 3 × 27)

    = 2 × (81 + 9 + 81) = 2 × 171 = 342 cm²

    Practice Next