Question
A solid cube, whose edge is of length 40 cm, is melted.
Identical solid cubes, each of volume 64 cm3, are made of this molten cube, without any wastage. How many such small cubes are obtained?Solution
the number of small cubes = volume of big cube/volume of small  given- the volume of a small cube = 64cm3 side of big cube = 40 Then volume = 40×40×40= 64000cm3 now several small cubes= 64000/64 = 1000
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