A rectangular field is to be enclosed by 520 feet of fence. One side of the field is a building, so fencing is not required on that side. Let x denote the length of one side of the rectangle perpendicular to the building. I Fenced Area 1 Building Determine the dimensions of the rectangle that maximize its area. Length of side perpendicular to the building, x = :] feet Length of side parallel to the building = :] feet