Respuesta :

Answer:

36

Step-by-step explanation:

I just have a feeling

Using Pythagorean theorem

[tex]\\ \sf\longmapsto b^2=51^2-24^2[/tex]

[tex]\\ \sf\longmapsto b^2=2601-576[/tex]

[tex]\\ \sf\longmapsto b^2=2025[/tex]

[tex]\\ \sf\longmapsto b=45[/tex]