find the value of x to the nearest tenth

Answer:
20.8
Step-by-step explanation:
Using Pythagorean theorem, you can find 1/2 of x.
12²= 6² +1/2x²
From this we find 1/2 x is ≈ 10.4
Then x itself would be 2 times that, resulting in 20.8, that is your answer