To simplify \( \sqrt{48} \), we can start by factoring 48 into its prime factors:
\[ 48 = 16 \times 3 \]
Since 16 is a perfect square, we can rewrite the square root:
\[ \sqrt{48} = \sqrt{16 \times 3} = \sqrt{16} \times \sqrt{3} = 4\sqrt{3} \]
Therefore, the simplified form of \( \sqrt{48} \) is:
\[ \boxed{4\sqrt{3}} \]