But the correct answer is 1800

Step 1: The formula for the area of a rectangle is
$A = l \times w$
where $A$ is area in m², $l$ is length in m, and $w$ is width in m.

Step 2: Substitute $l = 60$ m and $w = 30$ m into the formula.
$A = 60~m \times 30~\mathrm{m}$

Step 3: Multiply the values.
$60 \times 30 = 1800$

Step 4: Include the units.
$A = 1800~\mathrm{m^2}$

$\boxed{1800~m^2}$