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    Question

    Three cubes of equal volume are joined end to end. Find

    the surface area of the resulting cuboid if the diagonal of the cube is 7тИЪ3cm.
    A 574cm┬▓ Correct Answer Incorrect Answer
    B 686cm┬▓ Correct Answer Incorrect Answer
    C 540cm┬▓ Correct Answer Incorrect Answer
    D 504cm┬▓ Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    Given тАУ diagonal = aтИЪ3cm =7тИЪ3cm a = 7cm┬а Visible faces =14 Surface area of visible faces: - 14a┬▓ =14 ├Ч49 =686cm┬▓

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