Here is a picture of a cube, and the net of this cube.

What is the surface area of this cube?

Enter your answer in the box.
mm²
A cube and a net of the cube are shown. The edge length of the cube is labeled 12 millimeters. The net consists of 4 squares connected horizontally, and 1 square is attached to the top of the fourth square and 1 square is attached to the bottom of the first square. One square in the net is labeled with a side labeled 12 millimeters.