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Question
A circus tent is cylindrical to a height of 4 m and conical above it. If its diameter is 105 m and its slant height is 40 m, the total area of canvas required is
Options
1760 m2
2640 m2
3960 m2
7920 m2
Solution
7920 m2
Total area of the canvas required = (Curved surface area of the cylinder) + (Curved surface area of the cone)
= (2πrh + πrl)
`= (2xx22/7xx105/2xx4)+(22/7xx105xx40) ["d" = 105 "cm" r = 105/2 "cm"]`
`=(1320 + 6600) m2`
= 7920 m2
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