Question

3 metallic solid cubes whose edges are 3 cm 4 cm and 5 cm are metals and formed into the single tube find the edge of the cube so formed

Answer 1

Sum of Volume of cubes = (3)³ + (4)³ + (5)³
                                        = 27 + 64 + 125 
                                        = 216
But During melting Volume remains unchanged

So, Let edge of cube formed be A

so, A³ = 216
 So, edge of new cube = 6 cm