A rectangle, if its length increases by 2 cm and its width increases by 5 cm, just becomes a square, which means its length is 3 cm longer than its width. If the original width is x cm, then the length is (X+3) cm.

If the length is increased by 2 cm and the width is increased by 5 cm, the area will increase by 60 square cm.

Available, (X+5)×2+(x+3)×5=60.

= 5 of solution

The area of the original rectangle is (5+3)×5=40 (square centimeter).