From the question;
A technical mechinist is asked to build a cubical steel tank that will hold 220L of water
this implies

Using the formula of volume of cube

converting Liters to cubic meter
WE have

Hence

Finding the length
![\begin{gathered} l^3=0.22m^3 \\ l=\sqrt[3]{0.22m^3^{}} \\ l=0.604m \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/ji6nfai2obmwdb2a80gfltjslpr0ihmfvv.png)
Hence the smallest possible inside length of the cubical tank is 0.604m