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    Question

    The base area of a rectangular cistern is 1080 m², and it

    holds a volume of 32400 m³ of water. What is the depth of the water in the cistern?
    A 40 m Correct Answer Incorrect Answer
    B 35 m Correct Answer Incorrect Answer
    C 50 m Correct Answer Incorrect Answer
    D 30 m Correct Answer Incorrect Answer

    Solution

    ATQ,

    The cistern is the shape of a cuboid.

    We know that the volume of a cuboidal cistern = Length × Breadth × Depth

    Let the depth of the water in the cistern be 'h' metres.

    ATQ:

    32400 = 1080 × h

    Or, h = (32400/1080) = 30

    Required depth = 30 metres

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