A boat having a length 6 m and breadth 3 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of the man is:  Pick:
A) 100 kg
B) 120 kg
C) 89 Kg
D) 180 Kg
E) 110 Kg
Volume of water displaced	= (6 x 3 x 0.01) m3   = 0.18 m3.   Mass of man = Volume of water displaced x Density of water   = (0.18 x 1000) kg   = 180 kg.   Answer: 180 Kg
<result>D</result>
A boat having a length 6 m and breadth 3 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of the man is: