The slant height and base diameter of a concial tomb are 25m and 14 m respectively. Find the cost of white washing its curved
surface at the rate of Rs/-210 per 100 m2(square).
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Given, l = 25m
r = 7m
As we know,
Lateral surface area of a cone,
= πrl
= 22/7 × 25 × 7
= 550m²
If the cost of white washing 100m² is Rs- 210
Then, the cost of white washing 550m² will be-
= 210/100 × 550
= Rs- 1155
I hope this will help you...
r = 7m
As we know,
Lateral surface area of a cone,
= πrl
= 22/7 × 25 × 7
= 550m²
If the cost of white washing 100m² is Rs- 210
Then, the cost of white washing 550m² will be-
= 210/100 × 550
= Rs- 1155
I hope this will help you...
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