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A copper rod of diameter 1 inch and length 8 inch is drawn into a wire of length 18 inch of uniform thickness. What is the thickness of the wire?
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Water flows through a cylindrical pipe of internal diameter 7 cm at 36 km/h. How much time it would take to fill a cylindrical tank, the radius of whose base is 35 cm and height is 1 meter?
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A right triangle, with sides 15 cm and 20 cm, is made to revolve about its hypotenuse. What is the volume and surface area of the double cone so formed?
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Water flows through a circular pipe of internal radius 7 cm at 5 m per second. If the pipe is always half full, what is the amount water delivered by the pipe in 10 seconds?
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An exhibition tent is in the form of a cylinder surmounted by a cone. The height of the tent above the ground is 85 m and the height of the cylindrical part is 50 m. If the diameter of the base is 168 m, find the quantity of canvas required to make the tent?
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An open cylindrical vessel of internal diameter 7 cm and height 8 cm stands on a horizontal table. Inside this is placed a solid metallic right circular cone, the diameter of whose base is 7/2 cm and height 8 cm. Find the volume of water required to fill the vessel. If the cone is replaced by another cone, whose height is 1¾ cm and radius of whose base is 2 cm, find the drop in the water level?
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