4. (9 points) A farmer has enough material to build 45 feet of wooden walls. She wants to construct a set of four storage compartments for root vegetables in the corner of her basement as shown below. (No wooden walls are needed along the basement walls.) What overall dimensions should be used in order to maximize the total amount of space in the set of storage compartments? Include appropriate units with your answer. Show all work and use good notation in your work. I Basement Wall