Name the lengths of the sides of three rectangles that have perimeters of 14 units. Use only whole numbers?

The perimeter of a rectangle is calculated using the formula (P = 2(l + w)), where (l) is the length and (w) is the width. For a perimeter of 14 units, the equation simplifies to (l + w = 7). Three possible sets of whole number dimensions for rectangles with this perimeter are: (1, 6), (2, 5), and (3, 4).