Question

6.
A metal cube of edge 9 cm is melted and formed into
three smaller cubes. If the edges of two smaller cubes
are 6 cm and 8 cm, find the edge of the third smaller
cube.​

Answer 1

Answer:

6^3+8^3+x^3=9^3

216+512+x^3=729

x^3=729-728

x^3=1

x=1