A cylindrical vessel open at the top has a base diameter 56 cm. If the total cost of painting the outer curved surface of the vessel is ` 352 at the rate of ` 0.2 per 100 cm2, then the height of the vessel is (1)15 m(2)10 m (3)6 m(4)12 m
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Thank you for asking this question. Here is your answer:
Curved surface = 2 pi r h
352 = 2 x 22/7 x 28 x h
352 = 44 x 4 x h
352 = 156 x h
352/156 = h
h = 86/39 x 0.2/10 x 100
= 44.10 is the final answer for this question.
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