Math, asked by cafrinaaa8878, 1 year ago

the inner diameter of a circular well is 3.5m. it is 10m deep.find (i)its inner curved surface area (ii)the cost of plastering this curved surface at the rate of rs40 per m2

Answers

Answered by Aditya2321
39
Inner CSA=2×pi×3.5/2×10
=22/7×35
=22×5
=110m^2
•Since,CSA=110m^2
Cost of plastering = Inner CSA×40=110×40
=Rs.4400
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