the radius of a circle is 6 kilometers. what is the area?give the exact answer in simplest form.

Remember that
The formula to calculate the area of a circle is equal to
[tex]A=\pi\cdot r^2[/tex]we have
r=6 km
substitute
[tex]\begin{gathered} A=\pi\cdot6^2 \\ A=36\pi km2 \end{gathered}[/tex]