A) 3894 m
B) 973.5 m
C) 1947 m
D) 1800 m
Correct Answer: C
Solution :
(c): Radius = 52.5 m Area of the entire canvas, used for the tent = Surface area of cylinder + Surface area of cone \[=2\pi rh+\pi rl\] \[=2\times \frac{22}{7}\times 52.5\times 3+\frac{22}{7}\times 52.5\times 53\] This surface areas has to be equal to \[5\times \ell \] where \[\ell =\] length of canvas. Thus, we have \[5\ell =2\times \frac{22}{7}\times 52.5\times 3+\frac{22}{7}\times 52.5\times 53\] \[\Rightarrow \] \[\ell =1947\,\,m\]You need to login to perform this action.
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