1. The problem involves a rectangle with a total length of 18 cm and two horizontal bars inside it, one with a 3 cm segment on the right and the other with a 2 cm segment on the left. 2. We want to understand the lengths of these bars relative to the total length of the rectangle. 3. Since the total length is 18 cm, and the top bar has a 3 cm segment from its right edge, the length of the top bar is $18 - 3 = 15$ cm. 4. The bottom bar has a 2 cm segment from its left edge, so its length is $18 - 2 = 16$ cm. 5. Therefore, the lengths of the bars inside the rectangle are 15 cm for the top bar and 16 cm for the bottom bar. 6. This shows how segments inside a rectangle relate to the total length by subtracting the indicated segment lengths from the total length.