# 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= πr^{2}h

=>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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