Second largest side

In a scalene triangle $\triangle ABC$ , $a = 5$ and $\sin A = \dfrac{3}{8}$ where $a$ is the side opposite $\angle A$ and $0 < A < \dfrac{\pi}{2}$ . Given that $b$ is the second largest side of $\triangle ABC$ , what can be said about $b?$

Click here for a similar problem.