The area \( A \) of a circle is given by the formula:
\[ A = \pi r^2 \]
where \( r \) is the radius of the circle. Given that the radius \( r \) is 8 m, we can plug in the value:
\[ A = \pi (8)^2 = \pi (64) = 64\pi \]
Thus, the area of the circle in terms of \(\pi\) is:
\[ \boxed{64\pi} \text{ m}^2 \]