Answer:
6√3 units
Explanation:
In the largest triangle TNM
The hypotenuse NM = 9 + 3 = 12
Using phythagoras theorem
NT² + TM² = NT²
y² + 6² = 12²
y² + 36 = 144
y² = 144 – 36
y² = 108
y =√108
y = √(36×3)
y = √36×√3
y = 6√3 units
c
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