the cylinder Is V.J MI
The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find
in the cost of plastering this curved surface at the rate of Rs 40 per m².
28.
(1) its inner curved surface area,
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Answer:
inner curved surface area
= 2πrh = 2×22\7×3.5/2×10
22×0.5×20
inner curved surface area of well = 110m
cost of plasting 1m = 40 rupees
cost of plastering inner curved surface area of 110 m
= 110×40 = 4400 rupees
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