Answer:
72 inches²
Step-by-step explanation:
Let [tex]w[/tex] be equal to the width of the rectangle.
Let [tex]l[/tex] be equal to the length of the rectangle.
[tex]\frac{1}{2}l=w[/tex]
Plug in 12 inches as the length
[tex]\frac{1}{2}(12)=w\\6=w[/tex]
Therefore, the width of the rectangle is 6 inches.
[tex]A=lw[/tex]
Plug in 12 inches as the length and 6 inches as the width.
[tex]A=(12)(6)\\A=72[/tex]
Therefore, the area of the rectangle is 72 inches².
I hope this helps!
