the radius of a cylindrical pillar of a building is 28cm and its height is 4.5cm .Rate of painting is ₹20per sq.m to paint this pillar.Find the cost of painting 5 such pillar
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Step-by-step explanation:
Area required for painting = 2 pi r h
= 2*22/7*28*4.5 =2*22*2*7
=616 cm square
Then The area required for painting 5 such pillars = 5*616
3080 cm square or 30.8 m square
Then cost for painting 5 pillar = 30.8*20
= 616 ruppes
Hope this will helped you
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