Acylindrical pillar is 50 cm in diameter and 3.5 metre in height.Find the cost of painting the curved surfaceof the pillar at the rate of ₹12.50metre per square
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Radius = 50/2 = 25cm = 0.25m
Height = 3.5m
CSA = 2π r h
= 2 ×22/ 7 ×0.25 × 3.5 = 5.5 m²
cost of painting the curved surface of the pillar
= 5.5× 12.50 = Rs 68.75
Hope it will help you .
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