Page 2 - Worksheet-3 Ch-13-Surface Areas and Volumes [Cones]
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                     are 3 m. Find it volume, if 1cm  wheat cost is Rs 10, then find total cost.
               16.  How many metres of 5 m wide cloth will be required to make a conical tent, the           3
                     radius of whose base is 3.5 m and height is 12 m?
               17.  A semi-circular sheet of metal of radius 14 cm is bent to form an open conical           4
                     cup. Find the capacity of the cup.
               18.  A right-angled triangle ABC with sides 3 cm, 4 cm and 5 cm is revolved about             4
                     the side of 4 cm. Find the volume of the solid generated. Also, find the total
                     surface area of the solid.
               19.  Using clay, Prava made a right circular cone of height 48 cm and base radius 12  4
                     cm. Find the volume of the cone. If the cone is reshaped in to a cylinder of
                     radius 16 cm, then find the height of the cylinder so formed.
               20.  A tent is in shape of a right circular cylinder up to a height of 3 m and a cone         4
                     above it. The maximum height of the tent above ground is 13.5 m. Calculate the
                     cost of painting the inner side of the tent at the rate of Rs 3 per    , if the radius
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                     of the base is 14 m.























































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