A cylindrical pillar has radius 21 cm and height 4 m .find the curved surface area of the pillar and cost of polishing 36 such cylindrical pillar at the rate of rs 12 per m^2
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2*22/7*21*3*12
=44*9*12
=4752 Rs.(for one cylinder)
For 36 cylinders
=4752*36
=171072 Rs.
=44*9*12
=4752 Rs.(for one cylinder)
For 36 cylinders
=4752*36
=171072 Rs.
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