Question

The edges of 3 solid comes are 6cm, 8cm, and 10cm. These cubes are melted and recasted into a single cube. Find the edge of the resulting cube.

Answer 1

Let the edge of new Cube = a
Vol of new Cube = Vol of all three cubes
a^3 = 6^3 + 8^3 + 10^3
a^3 = 216 + 512 + 1000
a^ 3 = 1728
a^3 = 12×12×12
>> a = 12