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78. A farmer has 192 feet of fencing and wants to build two identical pens for his prize-winning pigs. The pens will be arranged as shown. Determine the dimensions of a pen that will maximize its area. A. 24' * 32' D. 24' * 64' B. 17' x 44' E. 4' x 152' C. 8' x 96' 79. A large pine tree was struck by lightning and fell as shown in the diagram. Which equation could be used to find the length of the fallen part of the tree? 8 ft A. 82 + 13? = x C. 132 - 8' = x B. V82 + 132 = x D. V132 - 82 = x 13 ft 80. The bottom of a ladder must be placed 4 feet from a wall. The ladder is 12 feet long. How far above the ground does the ladder touch the wall? your number to the nearest tenth. A. 10.6 ft B. 11.9 ft C. 11.3 ft D. 128 ft