Answer:
x ≈ 6.2
Step-by-step explanation:
Using Pythagoras' identity in the right triangle
x² + 17.1² = 18.2²
x² + 292.41 = 331.24 ( subtract 292.41 from both sides )
x² = 38.83 ( take the square root of both sides )
x = [tex]\sqrt{38.83}[/tex] ≈ 6.2 ( to the nearest tenth )