a cylindrical vessel open at the top 20 base diameter 56 CM if the total cost of painting the outer curved surface of vessel is rupees 352 the rate of rupees.0.
2 per 100 cm square then the height of The vessel is
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Hii dear,
# Answer- Height of veasel = 216cm
# Explaination-
Total cost of painting = Total surface × painting rate
Total surface = Total cost of painting/painting rate
Total surface = 352/(0.2/100)
Total surface = 176000 sq.cm.
But also,
Total aurface to be painted = 2πrh + πr^2
176000 = 22/7× 28 (2h+28^2)
2000-784=2h
h = 216cm.
Height of the cylinder = 216cm.
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