A right elliptical cylinder full of petr...

A right elliptical cylinder full of petrol has its widest elliptical side 2.4 m and the shortest 1.6 m. Its height is 7 m. Find the time required to empty half the tank through a hole of diameter 4 cm if the rate of flow of petrol is 120 m/min

60 min

90 min

75 min

70 min

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