Answer:
[tex]A=\pi\ units^2[/tex]
Step-by-step explanation:
The picture of the question in the attached figure
we know that
The area of a circle is given by the formula
[tex]A=\pi r^{2}[/tex]
we have
[tex]r=1\ units[/tex]
substitute in the formula
[tex]A=\pi (1)^{2}[/tex]
[tex]A=\pi\ units^2[/tex]