Question: Course: Calculus A rectangular field is to be fenced; a river flows through one side of the field and does not need to be fenced.

Course: Calculus

A rectangular field is to be fenced; a river flows through one side of the field and does not need to be fenced. The fencing material for the sides costs $6 per meter and the side parallel to the river costs $4 per meter. Establish the dimensions of the field that will enclose as much area as possible so that the cost will be $1,800.

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