can some help me out with this ? i need to know some steps so i can remember what im doing for the other questions i have.

Answer:
Step-by-step explanation:
[tex]a^{2} +b^{2}=c^{2} \\b^{2} =c^{2}- a^{2}\\b= \sqrt{b^{2} }[/tex]
49 - 16 = 33
[tex]\sqrt{33}[/tex] = 5.74