Question: What are the dimensions for the cheapest possible rectangular box with a volume of 891 em3 if the material the bottom costs $2/cm2, material for


What are the dimensions for the cheapest possible rectangular box with a volume of 891 em3 if the material the bottom costs $2/cm2, material for the sides costs $9/cm2, and material for the top costs $20/mn2 ? Separate your answers with a comma, i.e., x,y,z. (Note that the order doesn't matter.)
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