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    Question

    If V and S denote the volume and the total surface area

    of a cuboid (of sides a, b and c) respectively, then which of the following is true?
    A (1/V) = (2/S) (1/a + 1/b + 1/c) Correct Answer Incorrect Answer
    B (1/V) = (1/S) (2 + 1/b + 1/c) Correct Answer Incorrect Answer
    C 0 = (2/S) (1/a + 1/b + 1/c) Correct Answer Incorrect Answer
    D (1/V) = (2/S) (1/a – 1/b – 1/c) Correct Answer Incorrect Answer

    Solution

    The correct answer is A

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