Question

    A shopkeeper plans to wrap a rectangular gift box with gift

    paper. The dimensions of the box are 15 cm × 12 cm × ‘a’ cm. The cost of wrapping the gift is Rs. 9504, given that the price of the gift paper is Rs. 12 per cm². Determine the value of ‘a’.
    A 4 cm Correct Answer Incorrect Answer
    B 10 cm Correct Answer Incorrect Answer
    C 8 cm Correct Answer Incorrect Answer
    D 6 cm Correct Answer Incorrect Answer
    E 12 cm Correct Answer Incorrect Answer

    Solution

    Total surface area of rectangular box = 9504/12 = 792 cm 2

    According to question,

    2 (15 × 12 + 12a + 15a) = 792

    180 + 27a = 396

    27a = 216, a = 8

    So, the value of ‘a’ = 8 cm

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