Question: a box with a rectangular base, rectangular sides, and no top, is to have a volume of 4m^3. The width of the base is to

a box with a rectangular base, rectangular sides, and no top, is to have a volume of 4m^3. The width of the base is to be 1m. The material costs $10/m^2 for the base and $5/m^2 for the sides. What are the dimensions of the least expensive box? What is the cost of that box?

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