the inner diameter of a circular well is 2.8m. it is 8m deep. find the cost of plastering the inner curved surface at the rate of 60 rupee per square metre.
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Answer:4220.16 rupees
Step-by-step explanation:
It's simply, total cost of plastering = area of inner curved surface x cost of plastering per square metre
Now inner curved surface area = 2 x pi x inner radius of well x depth of well = 2 x 3.14 x (2.8/2) x 8 = 70.336 square metre
total cost = 70.336 x 60 = 4220.16 rupees
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