The area of a square field is 7200 m2. What is the length of its diagonal?

60 m 1800 m 180 m 120 m

120 m

Area of square field = 7200 m2 Area of square = (side)2 Diagonal of square = \(\sqrt {2}\) × (side) So, Let the side of the square field be m = m2 = 7200 = m = 60√2 = Diagonal of square field = 60\(\sqrt {2}\) × \(\sqrt {2}\) =  Diagonal of square field = 120 m