Squaring both sides of the equation $\sqrt{5+n}=7$, we get $5+n=49$.
Subtracting 5 from both sides, we find $n=44$.
Therefore, the value of $n$ is $\boxed{44}$.The answer is: 44
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
If $\sqrt{5+n}=7$, then what is the value of $n$?

### Answer:
