Answer: We can start by finding the width of the rectangular field using the formula for area of a rectangle:
Area = length x width
80 = 20 x width
width = 4 meters
Now we can use the formula for perimeter of a rectangle:
Perimeter = 2 x length + 2 x width
Perimeter = 2 x 20 + 2 x 4
Perimeter = 40 + 8
Perimeter = 48 meters
So, you would have traveled 48 meters if you walked the whole way around the field.
Explanation: