Rain water which falls on a flat rectangular surface of length 6 m and breadth 4 m is transferred in to a cylindrical vessel of internal radius 20 cm.what will be the height of water in the cylindrical vessel if the rain fall is 1 cm(take pi=3.14).
240 cm
190cm
191 cm
2400 cms

• ans: 191 cm
  volume of surface with water filled = volume of cylindrical vessel
  => 600*400*1 = pi*20^2 * h
  => h = 600/3.14
  => h ~ 191 cm
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