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      Question

      Find how many cubes of side 1 cm each can be made by

      melting a cuboid with dimensions 20cm × 40cm × 5cm? 
      A 400 Correct Answer Incorrect Answer
      B 40 Correct Answer Incorrect Answer
      C 4000 Correct Answer Incorrect Answer
      D 4 Correct Answer Incorrect Answer
      E none of these Correct Answer Incorrect Answer

      Solution

      Volume of cuboid = 20 x  40 x   5  ; Volume of cube =  1 x   1 x   1 , Hence number of cubes = volume of cuboid/volume of cube = (20 x 40 x 5)/(1 x 1 x 1) = 4000

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