The width of the box is m, let the height be m and the depth be m.Originally Posted byroseh

Then to make the volume we have:

The area of the base is so the cost of the base is:

The area of the sides id , so the cost of the sides is:

but , so the cost of the sides is:

.

Hence the total cost is:

dollars

and you don't know enough to simplify further.

RonL