Answer:
b = 10
Step-by-step explanation:
Since the diagram is a right-angled triangle, to get the missing, length, we will use the Pythagoras theorem as shown;

Substitute the given values into the expression to get the value of b
![\begin{gathered} 26^2=24^2+b^2 \\ 676=576+b^2 \\ b^2=676-576 \\ b^2=100 \\ b=\sqrt[]{100} \\ b=10 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/os7el3jq03fvqcg45yw351zsrsgootc6cm.png)
Hence the length of the missing side is 10