Given data
*The given volume is V = 125 ft^3
The formula for the volume of the cube is given as
![V=a^3](https://img.qammunity.org/2023/formulas/mathematics/high-school/54g3yue9a6qokcixosd728chcrbim2xtwc.png)
*Here 'a' is the side of the cube.
Substitute the known values in the above expression as
![\begin{gathered} 125=a^3 \\ a=5 \end{gathered}](https://img.qammunity.org/2023/formulas/physics/college/sugfu82scfhhq04myyf06lismj9tf7jsf0.png)
The formula for the area of one face of the tank is given as
![A=a^2](https://img.qammunity.org/2023/formulas/mathematics/high-school/einvvahn0btfwzepa3lr25hf23bztexm1w.png)
Substitute the known values in the above expression as
![\begin{gathered} A=(5)^2 \\ =25\text{ }ft^2 \end{gathered}](https://img.qammunity.org/2023/formulas/physics/college/shpxt8hlvnip92we4p7lasccnai0749c79.png)