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A rectangular flower garden with an area of 110m^2 is surrounded by a grass border 1...

A rectangular flower garden with an area of 110m^2 is surrounded by a grass border 1 m wide on two sides and a 2 m wide on the other two sides as shown in the figure. What dimensions of the garden minimize the combined area of the garden and​ borders?

1) A=

2) The interval of interest of the objective function is

3)The vertical height of the garden that will minimize the total area is

4) The horizontal width of the garden that will minimize the total area is

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