Answer: [tex]39ft^2[/tex]
Step-by-step explanation:
This is a rectangle missing a piece which looks like a triangle.
Find the area of the rectangle and subtract the area of the triangle.
Rectangle:
[tex]A=l*w\\A=(9ft)(5ft)\\A=45ft^2[/tex]
Triangle:
[tex]A=\frac{hb}{2}\\ A=\frac{(3ft)(4ft)}{2}\\ A= \frac{12ft^2}{2}\\ A=6ft^2[/tex]
Now subtract the area of the triangle from the area of the rectangle.
[tex]45ft^2-6ft^2=39ft^2[/tex]
