To solve for \( C \) in the equation \( 425 = C^2 \), we need to take the square root of both sides of the equation. This will give us the value of \( C \).
Step 1: Set Up the Equation
We start with the equation given in the problem:
\[
425 = C^2
\]
Step 2: Solve for \( C \)
To find \( C \), we take the square root of both sides:
\[
C = \sqrt{425}
\]
Step 3: Calculate the Value
Calculating the square root gives us:
\[
C \approx 20.6155
\]
Final Answer
Thus, the value of \( C \) is approximately \\(\boxed{C \approx 20.6155}\\).