Answer:
4
Explanation:
The third side is the hypotenuse of the right triangle with legs 2 and 2√3.
By the Pythagorean theorem, the hypotenuse is equal to
[tex]\begin{gathered} \text{hypotenuse = }\sqrt[]{2^2+(2\sqrt[]{3})^2} \\ \text{hypotenuse}=\sqrt[]{4+4(3)} \\ \text{hypotenuse}=\sqrt[]{4+12} \\ \text{hypotenuse}=\sqrt[]{16} \\ \text{hypotenuse}=4 \end{gathered}[/tex]
Therefore, the length of the third side is 4.
