Water is flowing at the rate of 13 km per hour through a pipe of
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    Surface Areas and Volumes

    Multiple Choice QuestionsShort Answer Type

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    659. A bucket made up of a metal sheet is in the form of a frustum of a cone. Its depth is 24 cm and the diameters of the top and bottoms are 30 cm and 10 cm respectively. Find the cost of milk which can completely fill the bucket at the rate of Rs. 20 per litre and the cost of the metal sheet used, if it costs Rs. 10 per 100 cm2 (use straight pi = 22/7).
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    660. Water is flowing at the rate of 13 km per hour through a pipe of diameter 14 cm into a rectangular tank which is 50 m long and 44 m wide. Find the time in which the level of water in the tank will rise by 21 cm.

    Solution not provided.

    Ans.  231 m3 

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