3.38
Explanation
Step 1
remember the percentage is a ratio to 100,so
[tex]26\rightarrow\frac{26}{100}=0.26[/tex]so, to find 26 % of any number just multiply by 0.26
so
[tex]\begin{gathered} 26\text{ \% of 13}\rightarrow0.26\cdot13=3.38 \\ \end{gathered}[/tex]so, the answer is 3.38