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A storage shed is to be built in the shape of a box with a square base. It is to have a volume of 245 cubic feet. The concrete for the base costs $3 per square foot, the material for the roof costs $2 per square foot, and the material for the sides costs $3.50 per square foot. Find the dimensions of the most economical shed. E> The length of one side of the shed's base is :| Ft. The height of the shed is it