50 men took a dip in a water tank 40 m long and 20 m broad on a religious day. If the average displacement of water by a man is 5m3 , then the rise in the water level in the tank will be:  Choose the correct choice from the following
A) 31.25 cm B) 25 cm C) 35 cm D) 50 cm E) None of these
Explanation:   Total volume of water displaced =(5 x 50) m3 = 250 m3   Rise in water level = 250/40Ã—20= 0.3125m = 31.25cm   31.25 cmnswer: 31.25 cm
<result>A</result>
50 men took a dip in a water tank 40 m long and 20 m broad on a religious day. If the average displacement of water by a man is 5m3 , then the rise in the water level in the tank will be: