Question

Three metal cubes of sides $5cm,4cm$ and $3cm$ respectively are method and recast into a new cube. Find the edge of the new cube so formed.

Answer 1

Total volume initially $=5^3+4^3+3^2$

$=50c{m}^3$

Now cube volume $=50c{m}^3$

$a^3=50$

$a=3.684cm$