[
  "Draw a bar model: Length = 5 units, Breadth = 4 units. Difference = 5 - 4 = 1 unit.",
  "1 unit = 13 cm. Length = 5 x 13 = 65 cm, Breadth = 4 x 13 = 52 cm.",
  "Perimeter = 2 x (65 + 52) = 2 x 117 = 234. Answer: 234 cm."
]