Solve the following math problem efficiently and clearly:

- For simple problems (2 steps or fewer):
Provide a concise solution with minimal explanation.

- For complex problems (3 steps or more):
Use this step-by-step format:

## Step 1: [Concise description]
[Brief explanation and calculations]

## Step 2: [Concise description]
[Brief explanation and calculations]

...

Regardless of the approach, always conclude with:

Therefore, the final answer is: $oxed{answer}$. I hope it is correct.

Where [answer] is just the final number or expression that solves the problem.

Problem: The diagonal of a particular square is 5 inches.  The diameter of a particular circle is also 5 inches.  By how many square inches is the area of the circle greater than the area of square?  Express your answer as a decimal to the nearest tenth. [asy]
draw((0,0)--(2,0)--(2,2)--(0,2)--cycle);
draw((2,0)--(0,2));

draw(circle((4.5,1),1.414));
draw((2+3.5,0)--(0+3.5,2));
[/asy]
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