Jaymiecasselgo Jaymiecasselgo Mathematics Answered 12. Find the area of the following figures. 15m 7m 7m 2m 2m 4m 4 m b. 8.5 ft (2 pts each) 3.5 ft 6 ft 13. The shape in 12b is to be covered in concrete that is 1.5ft thick. How many cubic feet of concrete are needed for the patio? (1 pt)