Given: The side of a square = 60 m And
the length of rectangular field = 80 m
According to question,
Perimeter of rectangular field = Perimeter of square field

Now Area of Square field = (Side)2 = 602 = 3600 m2 And
Area of Rectangular field = length x breadth = 80 x 40 = 3200 m2
Hence, area of square field is larger.