Question
A water tank is in the shape of a right circular cylinder of internal radius 7 m and height 14
A water tank is in the shape of a right circular cylinder of internal radius 7 m and height 14
m. It is closed at the top by a hemispherical dome of the same internal radius. The entire inner surface of the tank (including the dome and base) is to be painted with a waterproof coating at the rate of ₹15 per m². What is the total cost of painting the inner surface of the tank? (Take π = 22/7)
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