Respuesta :
Answer:
4.6 or √21
Step-by-step explanation:
We will use the pythagorean theorem which states that;
x² + y² = z²
Here,
x = line XY (10)
y = line XW (y)
z = line WY ( 11)
10² + y² = 11²
100 + y² = 121
y² = 121 - 100
y² = 21
y = √21
∴ y = √21 or 4.6