question 320 and 322

E Q E For the following exercises, consider the construction of a pen to enclose an area. m . You have 400 ft of fencing to construct a rectangular pen for cattle. What are the dimensions of the pen that maximize the area? 320 . You have 800 ft of fencing to make a pen for hogs. If you have a river on one side of your property, what is the dimension of the rectangular pen that maximizes the area? 21 . You need to construct a fence around an area of 1600 ftz. What are the dimensions of the rectangular pen to minimize the amount of material needed? 322 . Two poles are connected by a wire that is also connected to the ground. The first pole is 20 ft tall and the second pole is 10 ft tall. There is a distance of 30 ft between the two poles. Where should the wire be anchored to the ground to minimize the amount of wire needed