Q17 of 46 Page 1

Due to sudden floods, some welfare associates jointly requested the government to get 100 tents fixed immediately and offered to contribute 50% of the cost. If the lower part of each tent is of the form of a cylinder of diameter 4.2 m and height 4 m with the conical upper part of same diameter but of height 2.8 m, and the canvas to be used costs rs. 100 per sq. m, find the amount, the associations will have to pay. (Use π = 22/7) What value are shown by these associations?


For cylindrical part


Diameter, d = 4.2 m


Radius


Height, h = 4 m


For Conical part


Radius, r = 2.1 m [as diameter is same as cylindrical part]


Height, H = 2.8 m


Slant height





Required canvas for one tent = CSA of conical part + CSA of cylindrical part






A = 75.9 m2


Cost of 1 m2 canvas = 100 RS


Cost of 1 tent = 75.9(100) = 7590 RS


Cost of 100 tents = 100(7590) = 759000 RS


Cost shared by each school = 50% of 759000


=


Values shown : Helping someone in difficult times .


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