The perimeter of the lawn, with a length of 5 meters and breadth of 7 meters, is calculated using the formula 2l + 2w, resulting in a total of 24 meters.
The perimeter of a rectangle is calculated by adding the lengths of all four sides. Since we have a lawn with a length of 5 meters and a breadth of 7 meters, the formula for the perimeter (P) of a rectangle, which is P = 2l + 2w, where 'l' is the length and 'w' is the width, applies here.
Substituting our given values into the formula:
P = 2(5m) + 2(7m) = 10m + 14m = 24 meters.
Therefore, the perimeter of the lawn is 24 meters.
The probable question may be: "What is the perimeter of the lawn of length 5m and breadth 7m."