Final answer:
The total distance the man walks around a square field with a side length of 40m, four times, is 640 meters.
Step-by-step explanation:
The student is asking about the distance a man walks if he goes around a square field with a side of 40m, four times. To calculate the total distance walked, one must determine the perimeter of the square and then multiply it by 4 because he walks around the square four times.
The perimeter of a square is found by multiplying the length of one side by 4 (perimeter of a square = side × 4).
In this case, the side length is 40m, so one full walk around the square is 40m × 4 = 160m.
Since he walks around it four times, the total distance would be 160m × 4 = 640m.