SOLUTION: A tent of height 77dm is in the form of a right circular cylinder of diameter 36m and height 44 dm surmounted by a right circular cone. find the cost of the canvas at rs 3.50 per s

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Question 935229: A tent of height 77dm is in the form of a right circular cylinder of diameter 36m and height 44 dm surmounted by a right circular cone. find the cost of the canvas at rs 3.50 per sq meter.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
The key part to know is the formula for area of the cone top.
http://en.wikipedia.org/wiki/Formulae_of_shapes


The cone is pi*radius*tall,
pi%2A%2836%2F2%29%2A44;

The cylinder part of the tent, assuming that the bases do not contain a disc shaped area, is 2%2Api%2A%2836%2F2%29%2A%2877-44%29, the curved wall.

The cost:
%28pi%2818%29%5E2%2A44%2B2%2A18%2Api%2A%2833%29%29%28sqm%29%2A3.50%28%28rs%29%2F%28sqm%29%29, units of rs.