solve for x using pythagoras theorem (please)

28.04996
Step-by-step explanation:
a² + b² = c²
(2x)² + x² = 62²
4x² + x² = 3844
5x² = 3844
x² = 3844÷5
x² = 768.8
x =
[tex] \sqrt{768.8} [/tex]
x = 28.04996
I hope this is right. Apologies if it is not.