To simplify \( \sqrt{300} \), we can factor 300 into its prime factors:
\[ 300 = 100 \times 3 \]
Since \( \sqrt{100} = 10 \), we can rewrite \( \sqrt{300} \) as:
\[ \sqrt{300} = \sqrt{100 \times 3} = \sqrt{100} \times \sqrt{3} = 10\sqrt{3} \]
So, the simplified form of \( \sqrt{300} \) is:
\[ 10\sqrt{3} \]
Thus, the correct response is:
10 start root 3 end root.