Q. 104.9( 9 Votes )
The inner diamete
Answer :
Given,
Inner diameter of circular well = 3.5 m
Inner radius = 
Depth of well = 10 m
i) Inner curved surface area of well = 2πrh = 
m2
ii) Cost of plastering 1m2 area = Rs.40
Cost of plastering 110 m2 = 40×110 = 4400 rs.
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