A square field was enlarged by adding 5 feet to the length and width of the original field

The side length of the original field is 19 feet

Step-by-step explanation:

Let the side of original square be x

Now we are given that A square field was enlarged by adding 5 feet to the length and width of the original field.

So, length of side of enlarged field = x+5

Area of new enlarged field =

We are given that the area of the enlarged field is 576 square feet

So,

Hence The side length of the original field is 19 feet