Answer:
[tex]60[/tex]
Step-by-step explanation:
[tex]a {}^{2} = c {}^{2} - b { }^{2} \\ = 61 {}^{2} - 11 {}^{2} \\ = 3600 \\ a = \sqrt{3600 } \\ a = 60 \\ \\ hope \: it \: helps \\ pls \: mark \: it \: as \: branliest...[/tex]
60
61^2-11^2=x^2
x^2=3600
x=60
