Final answer:
The expression that can be used to calculate the length of an edge of the container is ∛125 (cube root of 125).
Step-by-step explanation:
The expression that can be used to calculate the length of an edge of the container is (a) ∛125. This is because the volume of a cube is calculated by taking the length of one edge and cubing it. So to find the length of one edge, we need to find the cube root of the volume.