Answer:
x = 2[tex]\sqrt{5}[/tex]
Step-by-step explanation:
Pytago:
[tex]2^2 + 4^2 = x^2\\x = \sqrt{2^2 + 4^2} \\x = 2\sqrt{5}[/tex]
4.47
x²= 2² + 4²
x² = 4 + 16
x²= 20
x = √20
x= 4.47
