follow the steps to find the surface area of the rectangular prism. what is the area of the front and back…

Explanation:

Step1: Identify dimensions for front - back

The front and back of a rectangular prism have dimensions of length and height. Here, length $l = 12$ cm and height $h=3$ cm.

Step2: Calculate area of one face

The area of a single face (front or back) is $A_1=l\times h = 12\times3=36$ $cm^{2}$.

Step3: Calculate area of front and back

Since there are two such faces (front and back), the total area $A = 2\times A_1=2\times36 = 72$ $cm^{2}$.

Answer:

$72$ $cm^{2}$