The volumes of 3 solid cubes made of metal are $125 cm^3, 64 cm^3$ and $27 cm^3$ respectively. After melting all the three cubes a solid cube is made. Find the edge of the new cube.

2.5 cm 4 cm 6 cm 5 cm

6 cm

Volume of the new cube formed = 125 + 64 + 27 = 216 cm³ We know, Volume = ( Side )³  ( Side )³  = 216 ( Side )³  = 6³ So, Side = 6 cm