Plz Help me 50 points to who ever answers firstt

Answer:
[tex]\boxed{\bold{57 \ Ft.}}[/tex]
Step-by-step explanation:
Area of whole rectangle including triangle: 66 Feet
(6 * 11 = 66)
Area of Triangle: [tex]\bold{\frac{1}{2}Base \ \cdot \ Height }[/tex]
Height: 3
Base: 6 (Solved by using this: (11 - 2 + 3))
Half of base: 3
3 * 3 = 9
66 - 9 = 57