Answer:
2√41
Step-by-step explanation:
To find the diagonal, use Pythagorean theorem,
hypotenuse² = leg₁² + leg₂²
x² = 10² + 8²
= 100 + 64
= 164
x =√164
[tex]x = \sqrt{2*2*41}\\\\x=2\sqrt{41}[/tex]
