To find the perimeter of a square with side length \(\sqrt{212}\), we use the formula for the perimeter of a square, which is:
\[ P = 4 \times \text{side length} \]
Substituting the given side length:
\[ P = 4 \times \sqrt{212} \]
Now, let's simplify \(\sqrt{212}\):
\[ \sqrt{212} = \sqrt{4 \times 53} = \sqrt{4} \times \sqrt{53} = 2\sqrt{53} \]
Substituting this back into the perimeter formula:
\[ P = 4 \times 2\sqrt{53} = 8\sqrt{53} \]
Thus, the perimeter of the square is:
\[ \boxed{8\sqrt{53}} \]