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Question

A circus tent is cylindrical to a height of 3 m and conical above it. If its base radius is 52.5 m and slant height of the conical portion is 53 m, find the area of the canvas needed to make the tent
  1. 9735
  2. 9730
  3. 9720
  4. 9710

A
9710
B
9735
C
9730
D
9720
Solution
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The correct option is A 9735
C.S.A of cylinder =2πrh
C.S.A. of conical portion S2=πrl
Area of canvas of tent =S1+S2
=2πrh+πrl
=πr(2h+l)
=227×52.5(3×2+53)
=9735m2.

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