Answer:
180 squared feet
Step-by-step explanation:
First, just multiply 15 by 18, to get the full rectangle. You get 270.
Then, find the area of "free space".
6*3 = 18
5*9 = 45
And theres another space, so just multiple
9 by 3 = 27
then subtract these from 270
270 - 18-45-27 = 180
