6. Calculate the length of the line segment

In the given figure, the line segments \(AM\), and \(CD\) are congruent, and \(M\) is the midpoint of \(AB\). The line segment \(CD =\) 14.9 \(cm\). Determine the length of the line segment \(AB\).

 

 

The length of \(AB =\)  \(cm\).