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    Question

    The volume of water measured on a rectangular field 400m

    200m is 8000 . Find the depth (amount) of rain that has fallen.
    A 15 cm Correct Answer Incorrect Answer
    B 18 cm Correct Answer Incorrect Answer
    C 10 cm Correct Answer Incorrect Answer
    D 20 cm Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Volume of water = Volume of the field with rainwater as height  ⟹ 8000 = 400 × 200 × h ∴ h = 8000/(400 × 200) = 1/10  m = 10 cm

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