18. 500 men took dip in a tank which is 80 m long, 50 m broad. What is

1.	18. 500 men took dip in a tank which is 80 m long, 50 m broad. What is the rise in water level if the averagedisplacement of water by a man is 4 m3?[Hint. Volume of water displaced by 500 men (4 x 500) 2000 m3Area of the tank = 80 Ă 50 = 4000 m2. Let the rise in the level of water = h metres. Then 4000 x h-20001
Answer» Volume of water displaced by 500 men = 4500 = 2000 cubic metres. Area of the tank = 8050 = 4000 sq metres. Let the rise in water level be h metres. Then, 4000*h = 2000=> h = 2000/4000=> h= 0.5 metres.

18. 500 men took dip in a tank which is 80 m long, 50 m broad. What is the rise in water level if the averagedisplacement of water by a man is 4 m3?[Hint. Volume of water displaced by 500 men (4 x 500) 2000 m3Area of the tank = 80 Ă 50 = 4000 m2. Let the rise in the level of water = h metres. Then 4000 x h-20001

Answer»

Volume of water displaced by 500 men = 4*500 = 2000 cubic metres.

Area of the tank = 80*50 = 4000 sq metres.

Let the rise in water level be h metres. Then, 4000*h = 2000=> h = 2000/4000=> h= 0.5 metres.