Answer:
[tex]\displaystyle 4\sqrt{5}[/tex]
Step-by-step explanation:
Use the Pythagorean Theorem:
[tex]\displaystyle a^2 + b^2 = c^2 \\ \\ 8^2 + 4^2 = c^2; \sqrt{80} = \sqrt{c^2} \\ \\ 4\sqrt{5}\:[or\:8,94427191...] = b[/tex]
So, you have this:
[tex]\displaystyle 8,94 ≈ c[/tex]
I am joyous to assist you at any time.
