Answer:
SA;
Area that will be covered with blue paint = 486 ft²
Step-by-step explanation:
✔️The four walls of Frank's room is to be covered with blue paint, therefore, it is a Surface area (SA) problem.
✔️Solve:
The number of square feet to be covered with blue paint = the surface area of the 4 faces
✔️Two of the faces have the following equal dimensions:
Length = 15 ft; height = 9ft
Surface area of the two faces = 2(15*9)
= 270 ft²
✔️The other two faces have the following equal dimensions:
Length = 12 ft, height = 9 ft
S.A = 2(12*9)
S.A = 216 ft²
Total area of the wall to be covered with blue paint = 270 + 216 = 486 ft²
