Question

.
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 210 per 100 m².
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Answer 1

Given :

Slant Height of Cone is 25 m.

The Diameter of Cone is 14 m.

To Find :

Cost of Whitewashing its Curved Surface at Rate of Rs.210.

Solution :

Using Formula :

Putting Values :

Now,

Cost of 100 m² is Rs. 210 :  

So, Cost of White-washing it is Rs.1155