Answer :

[tex] \sqrt{48} \\ = \sqrt{2 \times 2 \times 2 \times 2 \times 3} \\ = \sqrt{ {2}^{2} \times {2}^{2} \times 3} \\ = 2 \times 2 \sqrt{3} \\ = 4 \sqrt{3} [/tex]

Your answer is 4√3.