To find the surface area of a cube, use the formula:
\[ \text{Surface Area} = 6s^2 \]
where \(s\) is the length of a side of the cube.
Given that the side length of the cube is 1.5 meters, we can calculate:
\[ \text{Surface Area} = 6(1.5)^2 = 6 \times 2.25 = 13.5 \text{ square meters} \]
Thus, the surface area of the cube is 13.5 square meters.