1. The problem asks to find the surface area of a solid given the base area $B=144$ mm² and lateral area $L=1800$ mm².
2. The formula for the total surface area $S$ of a solid is:
$$S = B + L$$
where $B$ is the base area and $L$ is the lateral area.
3. Substitute the given values:
$$S = 144 + 1800$$
4. Calculate the sum:
$$S = 1944$$
5. Therefore, the total surface area is $1944$ mm².
Surface Area C0Cd5B
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