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Three metal cubes of sides 5 cm, 4 cm an...

Three metal cubes of sides 5 cm, 4 cm and 3 cm respectively are melted and recast into a new cube. The edge of the new cube so formed is ____ cm.

A

6 cm

B

8 cm

C

10 cm

D

None of these

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The correct Answer is:
A
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