What is perimeter 3.6m x 4.5m?

To calculate the perimeter of a rectangle, you use the formula: P = 2(length + width). For a rectangle measuring 3.6 meters by 4.5 meters, the perimeter would be P = 2(3.6 + 4.5) = 2(8.1) = 16.2 meters. Therefore, the perimeter is 16.2 meters.