Question

If 550 m of fencing is available to build five adjacent pens, as shown in the diagram on the left, express the total area A of the pens as a function of x. What value of x will minimize the total area? What is the maximum area?

Answer 1

describe the diagram.
Whatever the layout, I'm sure the maximum area will be when the fence is divided equally among lengths and widths.

Answer 2

Here is the layout,
_ _ __ _ _
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Height is x and width is y