A) Rs.2068
B) Rs.2156
C) Rs.2248
D) Rs.1872
Correct Answer: A
Solution :
Radius of cylinder = Radius of cone = 14 m. Height of cylinder \[=3\text{ }m~\] Height of cone \[=10.5\text{ }m\] Slant height of cone \[=\sqrt{{{(10.5)}^{2}}+{{(14)}^{2}}}\] \[=17.5\,m\] Total curved surface area of tent = Curved surface area of cylinder + Curved surface area of cone \[=\pi (2\times 14\times 3+14\times 17.5)\] \[=\frac{22}{7}\times (84+245)=\frac{22}{7}\times 329=1034c{{m}^{2}}\] Cost of painting the inner surface at the rate of Rs. 2 per\[~{{m}^{2}}=2\times 1034=Rs.2068\]You need to login to perform this action.
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