A cylindrical pillar is 50 cm in diameter and 3.5 m in height. Find the cost of painting the curved surface of the pillar at the rate of 100 /m
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Step-by-step explanation:
CSA=2πrh
= 2×22/7×2500×3.5
=2×22×2500×0.5
=1×55000
= 55000
cost =100×55000
=500000