Answer:
3√2 inches ≈ 4.24 inches
Explanation:
You want the length of the side of a square with an area of 18 square inches.
Area formula
The formula for the area of the square is given as ...
A = s²
Solution
Solving for s, we find ...
s = √A . . . . . take the square root of both sides of the equation
For an area of 18 square inches, the side length is ...
s = √(18 in²) = 3√2 in ≈ 4.24 in
The length of the side of the square is exactly 3√2 inches, about 4.24 inches.
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Additional comment
Lengths are measured in units of distance (inches).
Areas are measured in units of distance squared (square inches).
Volumes are measured in units of distance cubed (cubic inches).