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
.
Solution:
Diameter of the base of a conical tomb
m
Radius of the base of a conical tomb
m
Slant height of the conical tomb
m
Curved Surface Area of the conical tomb
Cost of white washing 100
of curved surface area = Rs 210
Cost of white washing 1
of curved surface area =Rs
Rs 2.1
Therefore, cost of white washing 550
of curved surface area
Rs 1155
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