Three metal cubes with edges 6cm, 8cm and 10cm respectively are melted together and formed into a single cube. Find the side of the resulting cube.
Solution and explanation pls?
Solution and explanation pls?
IMO: 12
volume of new cube = 10^3 + 8^3 +6^3
==> 2^3(5^3+4^3+3^3)
==> 2^3(216)
==> 2^3*6^3
==> 12^3
so side = 12
