5. A man sold a square field of side 35 mand a rectangular field of length 51 m andbreadth 25 m. He then purchased a squarefield of equal area. Find the side of thesquare field.

Side of square (a) = 35m.

Area = a² = 35² = 1225m².

Length of rectangle = 51m.

Width of rectangle = 25m.

Area = l × b = 51 × 25 = 1275m².

Now, Area of square field became = 2500m².

s² = 2500 => s = √2500 = 50m.

Perimeter of new square field = 4a

= 4 × 50 = 200m.

answer: i think it is (1,-2)