Answer:
Step-by-step explanation:
I think your question is missed of attach the photo of the box, allow me to add in and hope it will fit the original one
Here is my answer:
Let A is the surface area of the box
As we know that the surface area will be the sum of the four rectangular sides' areas and the base area (because this box is opened)
A = x² + 4xh
<=> (A - x²)/4x = h
and the volume formula is:
V = x²h
Substitute h from the formula of A to the formula of the Volume, we have:
V = (x²) * (A - x²)/4x
V = (Ax - x³)/4
Hope it will find you well.