a. A rectangular pen is built with (me side against a barn, If 2300 m cffencing are used for the other three sides dfthe pen, what dimensions maximize the area of the pen? [1. A rancher plans to make four Identical and adiacent rectangular pens against a barn, each with an area of 100 m2 (see gure]. What are the dimensions of each pen that minimize the amount of fence that must he used? 100 100 a. To maximize the area ufthe pen, the sides perpendicular to the barn should be 575 m long and the side parallel to the barn should be 1150 m long. (Type exact answers, using radicals as needed) h. To minimize the amount of fence that must he used, each of the sides perpendicular to the barn should be m long and each of the sides parallel to the ham should be m long (Type exam answers, using radicals as needed)