Question

20. The cost of cementing the inner
curved surface of a 14m deep well of
radius 3m at the rate of 24 per m is: *
O 1256
O 1056
O 1076
O
1126​

Answer 1

Answer:

curved surface area of cylinder =2πrh

=2*22/7*3*14

=2*22*3*2

=264m²

cost per m²= 24rupees

24*264= 6336rupee