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 4 m3, then the rise in the water level in the tank will be:  Choose the correct choice from the following options
A) 20 cm	B) 23 cm	C) 25 cm	D) 30 cm	E) 32 cm
L*b*h=Total water displaced=200(given)   To find height i.e rise in the water level   h=200/L*B   H=25cm   answer :25 cm
<result>C</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 4 m3, then the rise in the water level in the tank will be: