Question

5 . A cylindrical pillar is 1 m in diameter and 4.2 m in height. Find the cost of white washing the curve
surface of the pillar at the rate of 15 per m'.
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Answer 1

Answer:

Step-by-step explanation:

Height = 4.2 cm and radius = diameter /2 = 1/2m.

Surface area of curved surface = 2*22/7*1/2*4.2=13.2

Cost per m^2=15

Cost for 13.2 m^2= 13.2*15= 198Rs