Three cubes of iron whose edges are 6 cm, 8 cm and 10 cm respectively are melted and formed into a single cube. The edge of the new cube formed is
We know that,
Volume of cube = a3
Total Volume of cube = 63 + 83 + 103
= 216 + 512 + 1000
= 1728 cm3
Therefore,
Edge of the new cube = 
= 12 cm
Hence, option A is correct
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