Question

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 m².​

Answer 1

I: 109.96m^2 (lateral surface area)
II: 109.96x40=about 4398.4

Answer 2

Refer to the attached file below

Hope it helps...

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