Q19 of 94 Page 228

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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