V.1 Which is correct?


Rachel needs to paint a room in her house.

Damien and Sydney help figure out how much of the room she is going to paint.

Damien's "Surface Area" Method
I need to find the surface area of the room
I cross 2lw out because I'm not painting the floor or the ceiling
I substitute the values into the formula and calculate
The walls are covered with paint!
SA = 2(18)(9) + 2(15)(9)
SA = 594ft2