SOLUTION
Given the question in the image, the following are the solution steps to answer the question.
STEP 1: Write the given measures
[tex]\begin{gathered} AB=13 \\ BC=26 \\ AC=? \end{gathered}[/tex]
STEP 2: Find the length of AC
[tex]\begin{gathered} AC=AB+BC \\ By\text{ substitution,} \\ AC=13+26=39 \end{gathered}[/tex]
Hence, AC is 39
