Minimizing Construction Costs

The management of the UNICO department store has decided to enclose an 874 ft² area outside the building for displaying potted plants and flowers. One side will be formed by the external wall of the store, two sides will be constructed of pine boards, and the fourth side will be made of galvanized steel fencing. If the pine board fencing costs $7/running foot and the steel fencing costs $4/running foot, determine the dimensions of the enclosure that can be erected at minimum cost. (Round your answers to one decimal place.)

There is a rectangular fence enclosing space outside of a building. The rectangle is formed by the external wall of the building, one side of galvanized steel fencing, and two sides of pine wood boards.

wood side ft

steel side ft