Answer: 6.503
Step-by-step explanation:
The formula is [tex]a^{2} + b^2 = c^2[/tex]
draw a triangle with the two legs being 5 and 4 and use the formula to solve for c, the hypotenuse!
so, [tex]5^2+4^2=c^2[/tex] OR [tex]\sqrt{5^2+4^2[/tex]
which yields [tex]\sqrt{41}[/tex] OR 6.503