Final answer:
The length of each side of the square can be found by taking the square root of the given area.
Step-by-step explanation:
To find the length of each side of the square, we need to take the square root of the given area. The formula for the area of a square is A = side^2, where A is the area and side is the length of each side.
In this case, we have the area as a² + 222 + 121 inches². To simplify, we combine the terms 222 and 121 to get 343. So, the equation becomes a² + 343 = A. Now, taking the square root of both sides, we get √(a² + 343) = √A. Hence, the length of each side of the square is √A.
Learn more about Square area calculation