The answer is 9 ft because if you subtract 6 from 9 you get 3 then when you multiply 9*3 you get 27 ft. I hoped this helped you!!
Answer:

Step-by-step explanation:
we know that
A quadratic function in factored form is equal to

where
a is the leading coefficient
x_1 and x_2 are the zeroes of the function
substitute the given values

Find the value of a
Remember that
For x=0 ----> f(0)=4
substitute


so




Use the formula.
Area = (1/2)*13*10*sin(72°) ≈ 61.8 units².
D
uses the the formula y=mx+b and m is the slope. b is the y intercept.