The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find
(i) its inner curved surface area,
(ii) the cost of plastering this curved surface at the rate of Rs 40 per
.
Solution (i)
Inner diameter of the circular well
m
Radius of the circular well
m
Height of the circular well
m
Inner curved surface area of circular well
Solution (ii)
We have found above that inner curved surface area of circular well
The cost of plastering this inner curved surface area at the rate of Rs 40 per
Rs 4400
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