Hello.
The surface area of a rectangular prism can be found by adding up the areas of all the faces. Additionally, since this is a rectangle, opposite sides will be of the same area, meaning that the surface area of a rectangular prism can be represented with the following equation.
Now let's plug in the dimensions of the rectangular prism.
As for the units, the dimensions of the rectangular prism are given in centimeters, so our area will be in centimeters squared, as we are working with area.
Hope this helps!