A) Rs. 52.00 (approx)
B) Rs. 39.20 (approx)
C) Rs. 35.20 (approx)
D) Rs. 23.94 (approx)
Correct Answer: D
Solution :
Given that, \[r=32\,cm,\text{ }\] \[h=60\,cm\] \[\therefore \] \[l=\sqrt{{{r}^{2}}+{{h}^{2}}}=\sqrt{1024+3600}\] \[=\sqrt{4624}=68\] \[\therefore \] Curved surface area \[=\pi rl\] \[=3.14\times 32\times 68\] \[=6832.64\,c{{m}^{2}}\] \[\because \] Cost of painting 1 sq m \[=Rs.\,35\] \[\therefore \] Cost of painting \[6832.64\text{ }{{m}^{2}}\] \[=0.35\times 6832.64=Rs.\,23.94\] (approx.)
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