Answer:
[tex]\sqrt{60}[/tex]
Step-by-step explanation:
Use the Pythagorean theorem a^2 + b^2 = c^2
In this case you are given a and c, so set the equation up like
2^2 + b^2 = 8^2
b^2 = 8^2 - 2^2
b =[tex]\sqrt{8^{2} -2^{2} }[/tex]
b =[tex]\sqrt{60}[/tex]
