Geometry problem (Frustrating!)

timer Asked: Feb 12th, 2016

Question description

This question frustrates me.  I came up with B on this homework.  I know two side will be the same and longer and two sides will be the same and shorter (a rectangle).  B was wrong when it was graded, now I have no idea what I am doing wrong as my numbers (I thought) were correct.  Maybe you can show me what I am doing wrong?

Marcus has 72 feet of fencing. He wants to build a rectangular pen with the largest possible area. What should the dimensions of the rectangle be?

a. 18 ft by 18ft

b. 22ft by 14ft

c. 20ft by 16ft

d. 20 ft by 22ft

e. All of the above

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