Three cubes of metal whose edges are 3, 4 and 5 cm respectively, are melted without any loss of metal into a single-cube. Find (i) edge of the new cube (ii) surface area of the new cube.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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8.Three cubes of metal whose edges are 3, 4 and 5 cm respectively, are melted without any loss of metal into a single-cube. Find (i) edge of the new cube (ii) surface area of the new cube.

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