Dave wants to build a rectangular screened-in porch that is 20 feet long, and it will extend 6 feet out from the back side of his house. Dave wants the height of the porch to be 14 feet tall. He decides to make all three outside walls of the porch from screen frames that extend from floor to ceiling. The hardware store cuts lengths of screen from a roll that is 2-feet wide. Part A
What is the total surface area of the screened-in sides of the porch?

Part B
If the hardware store charges $1.10 per square foot of screen, how much will the screen cost?