Please answer this question now

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

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step-by-step explanation: