Answer:
The area of the garden is

Explanation:
Area of a Square
Given a square of a side length of x, the area is calculated as:

There is a square garden area of a side length of x=50 feet. The area is:

Inside of it, there is another square area for a fountain display of a side length of 12 feet. The area is:

The area of the garden is the difference between A2 and A1:

