Three cubes of iron, whose edges are 3 cm, 4 cm, 5 cm respectively, ar – McqOptions

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1.	Three cubes of iron, whose edges are 3 cm, 4 cm, 5 cm respectively, are melted to be formed into a single cube. The edge of the new cube formed is:
A.	6 cm
B.	7 cm
C.	8 cm
D.	9 cm
Answer» B. 7 cm

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