10 cylindrical pillars of a building have to be painted if the diameter of pillar is 50cm and height is 4m. What will be the cost of painting it at the rate of rs 14 per square meter
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d=50cm,r=25cm=0.25m,height=4m
cause of cylinder=2Πrh=2×Π×0.25×4=6.28sq.m
total area=6.28×10=62.8sq.m
total cost=62.8×14=₹879.20
cause of cylinder=2Πrh=2×Π×0.25×4=6.28sq.m
total area=6.28×10=62.8sq.m
total cost=62.8×14=₹879.20
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