Q19 of 63 Page 21

A circus tent is cylindrical to a height of 3 metres and conical above it. If its diameter is 105 m and the slant height of the conical portion is 53 m, calculate the length of the canvas 5 m wide to make the required tent.


For cylindrical part, we have


Height( h) = 3 m


Radius (r) = m


∴ Total curved surface area = 2πrh+2πrl


= πr(2h+l) = ×× (6+53) m2= 11×15×59 m2


Hence, length of 5 m wide canvas = m = 1947 m


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