An illustration shows the unfolded version of a rectangular prism composed of 6 rectangles. There are four adjoining rectangles positioned horizontally. The first and third are similar and smaller. The second and fourth are similar and bigger. The first rectangle is labeled 1 millimeter on the top horizontally. The fourth rectangle is labeled as 5 millimeters on the bottom and 4.5 millimeters on the right side. The second rectangle shares the top and bottom sides with two similar rectangles, one on each side.
Each rectangle represents one face of the rectangular prism, with the first and third faces being the top and bottom of the prism, and the second and fourth faces being the sides. The measurements indicate the dimensions of each face as the prism is unfolded.
