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    Question

    If 3 cubes of side 10 cm each are connected in a row, find

    the total surface area of the shape formed.
    A 1400 cm² Correct Answer Incorrect Answer
    B 1512 cm² Correct Answer Incorrect Answer
    C 1650 cm² Correct Answer Incorrect Answer
    D 1770 cm² Correct Answer Incorrect Answer

    Solution

    ATQ,

    Length = 3 × 10 = 30 cm
    Breadth = 10 cmHeight = 10 cm


    Total surface area = 2 × (30 × 10 + 10 × 10 + 10 × 30)

    = 2 × (300 + 100 + 300) = 2 × 700 = 1,400 cm²

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