Algebra-2

Question Analysis
This problem requires understanding the relationship between the area of a rectangle and its dimensions, and solving a quadratic equation using the square root method.

Key Concept Explanation
For a square (a special case of a rectangle where length and width are equal), the area can be expressed as , where is the side length. We set up the equation and solve for .

Step-by-step Solution
1. Set up the equation:

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