Answer:
we can find the area of the total rectangle and then subtract the area of the squares
Step-by-step explanation: the formula is A=bxh
Where b is the base and the height replacing
A=18x15
A=270
The area of the rectangle is 270 square ft
Square area
The area of the square is A=LxL
A=3x3
A=9
the area of one square is 9square ft, and the area of both squares is 18square ft
Final area
we subtract the area of the squares to area of the rectangle
270-18=252
the total area is 252 square feet