Answer:
7. 65 m
8. 4.75 cm
Step-by-step explanation:
7. [tex]b=\sqrt{63^2+16^2} \\[/tex]
[tex]b=\sqrt{3969+256}[/tex]
[tex]b=\sqrt{4225}[/tex]
[tex]b=65[/tex]
8. [tex]a=\sqrt{7.5^2-5.8^2}[/tex]
[tex]a=\sqrt{56.25-33.64}[/tex]
[tex]a=\sqrt{22.61}[/tex]
[tex]a=4.75[/tex]
have a good day! :)
