Answer:
[tex]\sqrt{20}[/tex], calculate this further on calculator if necessary
Step-by-step explanation:
The Pythagorean Theorem states that [tex]a^2 +b^2=c^2[/tex]
Plugged in, we get [tex]2^2+4^2=c^2[/tex]
4 + 16 = c^2
20 = c^2
c = [tex]\sqrt{20}[/tex]
