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    Question

    A wooden box measures 20cm by 12cm by 10cm. Thickness of

    wood is 1 cm. volume of wood to make the box is.(in cm 3 )
    A 754 Correct Answer Incorrect Answer
    B 560 Correct Answer Incorrect Answer
    C 860 Correct Answer Incorrect Answer
    D 960 Correct Answer Incorrect Answer

    Solution

    l=20, b=12, h=10, and x =1 Volume of hollow cuboid = l× b× h –(l-2x) (b-2x) (h-2x)    --where, x is the thickness of walls of the cuboid = 20×12×10 – (20-2) (12-2) (10-2) =2400-18×10×8 =2400-1440= 960cm3

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