8a.) we know that area is length time height and they give us the mesaurements of 2 walls (26 feet and 9 feet) and the mesaurement of the last wall ( 18 feet and 9 feet) all we do is multiply and add them together soooo 26 x 9 = 234 234 x 2 = 468 (since there are 2 walls that are exactly the same) and finally our last wall 18 x 9 = 162 and now we add together 468 + 162 = 630 so all together the amount of surface area she has to paint iss 630feet ² i hope this was helpful:) and don't forget 2 MARK ME BRIANLIEST!