Aptitude | Mensuration 3D | Question 5

A drum is full of water. Diameter of the drum is 35cm. The level of water will be dropped by how much, if 11 litres of water is taken out:
(A) 40/7
(B) 80/7
(C) 70/9
(D) 13/8


Answer: (B)

Explanation: Volume of cylinder= πr2h
=>22/7∗35/2∗35/2∗h=11000 {11 lt = 11000 mlt}
=>h=(11000∗7∗4)/(22∗35∗35)cm=80/7cm

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