We are asked to evaluate the expression $-\sqrt{36}$.

1. Problem Description

We are asked to evaluate the expression $-\sqrt{36}$.

2. Solution Steps

First, we evaluate the square root of

3

6. Since $6 \times 6 = 36$, we have $\sqrt{36} = 6$.

Now, we apply the negative sign:

$-\sqrt{36} = -6$.

3. Final Answer

-6