Question

a cylindrical pillar is 1m in diameter and 4.2 metre in height find the cost of whitewashing the curved surface of the pillar at the rate of Rs 15 per m square​

Answer 1

Answer:

Step-by-step explanation:

CSA=2πrh

=2*π*0.5*4.2

=132m²

Cost of white washing =Rps 15

So cost=CSA*15

132*15=Rps 1980

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