General: Fencing A homeowner wants to build, along her driveway, a garden surrounded by...

General: Fencing A homeowner wants to build, along her driveway, a garden surrounded by a fence. If the garden is to be 5000 square feet, and the fence along the driveway costs $6 per foot while on the other three sides it costs only $2 per foot, find the dimensions that will minimize the cost. Also find the minimum cost. (See the preceding diagram.)