Since this square has a diagonal length of 2 inches, the area of the square is equal to 2 square inches.
In Mathematics and Geometry, the area of a square can be calculated by using this mathematical equation (formula);
A =

Where:
- A represents the area of a square.
- x represents the side length of a square.
In Mathematics and Geometry, the side length of a square can be calculated by using this mathematical equation (formula);
Diagonal, d = √2x
By solving for x, we have the following side length:
x = d/√2
x = 2/√2
x = meters.
Now, we can determine the area of this square;
Area of square =

Area of square = 4/2
Area of square = 2 square inches.