Answer:
c
Step-by-step explanation:
Using the Altitude- on- Hypotenuse theorem
( leg of the large Δ )² = ( part of hypotenuse below it ) × ( whole hypotenuse )
x² = 3 × ( 3 + 8) = 3 × 11 = 33 ( take the square root of both sides )
x = [tex]\sqrt{33}[/tex] → c
