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प्रश्न
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.
उत्तर
Total canvas used = curved area of cylinder + curved area of cone
`=(2 xx 22/7 xx 32.5 xx 3 + 22/7 xx 52.5 xx 53) m^2`
`=22/7 xx 52.7 xx (6 + 53)m^2`
`= 22 xx 7.5 xx 59`
`= 9735 m^2`
So,
Area of canvas = 9735
Length × width = 9735 m2
Length × 5 = 9735
So length
`=(9735)/5`
` = 1947 "mtr".`
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