If the length of a rectangle is unchanged and the width is increased by 4m, it will become a square with an area of 56 square meters more than the original. What is the area of the original rectangle

If the length of a rectangle is unchanged and the width is increased by 4m, it will become a square with an area of 56 square meters more than the original. What is the area of the original rectangle

56 △ 4 = 14m (L)
The area of the original rectangle is 14ch3 (14-4) = 140 square meters