1.

27. A boat having a length of 3 metre and breadth 2 metreis floating on a lake. The boat sinks by 1 cm whena man gets on it. The mass of the man is​

Answer»

Given :

A boat having a LENGTH of 3 metre and breadth 2 metre is floating on a lake. The boat sinks by 1 cm when a man gets on it.

To find :

The mass of the man is

Solution :

Volume of water displaced

V = 3M x 2m x (1/100)m

➵ v = (6/100) m³

mass of man = mass of water displaced

➵ m = vp

➵ (6/100m³) (1000kg/m³)

➵ 60 kg

The mass of the man is 60 kg

Extra information :

Cube

  • V = s³

Right Rectangular PRISM

  • V = LWH

Prism or Cylinder

  • V = Ah

Pyramid or Cone

  • V = ⅓Ah

Sphere

  • V= 4/3πr³



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