#### Answer

Since the length of $DC$ is $DB + BC$, we can see that the length of $DC$ is $2+\sqrt{3}$

#### Work Step by Step

The length of $DB$ is 2
The length of $BC$ is $\sqrt{3}$
Since the length of $DC$ is $DB + BC$, we can see that the length of $DC$ is $2+\sqrt{3}$