A water tank is formed with the combination of cylinder and hemisphere. The total height of the tank is 20mand base area is 154m^2. If the tank is filled with water at the rate of 45 paisa per litre, what is the total cost?
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Answer:
121.5 paisa
Step-by-step explanation:
πr^2 = 154
R = 7m
height of cylinder = 20 - 7 = 13m
height of hemisphere = 7m
volume = πr^2h + 2/3πr^3 = 1922 + 781.66 = 2703.66m^3
2703.66/1000 = 2.70366L
cost = 45 * 2.7 = 121.5 paisa
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