The slant height and base diameter of a conical tomb are 25 m and 14 m respectively. Find the cost of white-washing its curved surface at the rate of Rs 210 per 100 m2

Slant height (l) of conical tomb = 25 m

Base radius (r) of tomb =


=7 m


CSA of conical tomb = πrl


= * 7 * 25


= 550 m2


Cost of white-washing 100 m2 area = Rs 210


Cost of white-washing 550 m2 area = Rs ()


= Rs 1155


Therefore, it will cost Rs 1155 while white-washing such a conical tomb


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