Answer
[tex]8^2-4^2[/tex]
Step-by-step explanation
The figure consists of a square with sides of 8 units from which a square of sides of 4 units has been subtracted.
The area of a square is calculated as follows:
[tex]A=a^2[/tex]
where a is the length of each side.
Substituting a = 8, the area of the bigger square is:
[tex]A_1=8^2[/tex]
Substituting a = 4, the area of the smaller square is:
[tex]A_2=4^2[/tex]
Finally, the area of the figure is:
[tex]A_1-A_2=8^2-4^2[/tex]
