Have you done dimensional analysis? This is the perfect time to use it. You simply write the problem as a fraction: 152 ft / 1 yr. Then you multiply it by conversion factors until you get the units you want (in/day). Then you simply multiply across (I hope I added the picture correctly). You should get 4.997 inches in a day. (You should probably round the answer up to 5, but it depends on what your teacher is asking for.)
Step-by-step explanation: The area of the pentagon will be the sum of the five congruent triangles formed. The area of one of these triangles is equal to the side of the pentagon*height/2