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    Surface Areas and Volumes
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    3 over 4 th of a cylindrical can contains milk. The height of the can is 1.4 m and radius is 0.4 m. This milk is poured into small cylindrical glasses of height 10 cm and radius 5 cm. How many small glasses are needed to empty the can?

    Solution not provided.

    Ans.  672 

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     A military tent is in the form of a right circular cone of vertical height 9 m, the diameter of the base being 10.5 m. If 18 soldiers can sleep in it, find the average cubic meters of air space available to each soldier.

    Solution not provided.

    Ans.  231 over 16 straight m cubed

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    The four of a rectangular hall has a perimeter 110 m. If the cost of painting the four walls at the rate of र 10 per m2 in र 13200, find the height of the hall. 

    Solution not provided.

    Ans.  12 m

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    So circular plates, each of radius 7 cm and thick ness 1 half cm are placed one above another to form a solid right circular cylinder. Find the total surface area and the volume of the cylinder so formed.

    Solution not provided.

    Ans.  1408 cm2

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    How many meters of cloth 4 cm wide, will be required to make a conical tent, the radius of whose base is 600 cm and height is 8 cm (Use π = 3.14). 

    Solution not provided.

    Ans.  471 over 625 straight m

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