The inner diameter of a circular well is 7 meter and it is 10 meter deep. Its inner curved surface area is
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Step-by-step explanation:
Given:
⇒(i)r= radius=23.5=1.75 , h= depth of the well=10m
⇒Curved surface area
=2πrh
=(2×722×1.75×10)m2=110m2
⇒(ii) Cost of plastering = Rs 40 per m2
The cost of plastering the curved surface = Rs (110×40)= Rs 4400.
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