Question

a cylindrical vessel open at the top has a base of radius 10.5 cm and its height is 14 cm find the cost of painting the inner part of the vessels at the rate of 10 rupees per sq ..cm​

Answer 1

Answer:

Step-by-step explanation:

radius = 10.5 cm

height = 14 cm

inner area = inner lateral surface area  +B.A{Base area}

              = 2πrh + πr²

              = 2×(22/7)×14×10.5 + (22/7)×10.5²

              = 1270.5 cm²

rate as given in the question = ₹10 per cm²

cost of the vessel = 1270.5×10 = ₹12705

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