A boat having a length 9 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 one:  A) 100 kg  B) 120 kg  C) 189 Kg  D) 180 Kg  E) 270 Kg
Volume of water displaced	= (9 x 3 x 0.01) m3   = 0.27 m3.   Mass of man = Volume of water displaced x Density of water   = (0.27 x 1000) kg   = 270 kg.   Answer: 270 Kg
<result>E</result>
A boat having a length 9 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: