Is this a rectangle? If it is, then it is 9*8/9=8 square feet.
If it is a general parallelogram, there is not enough information to solve the problem because we don't know the height for certain.
Answer:

Step-by-step explanation:
Given

Required
Write a formula
The above sequence shows a geometric sequence because:
-- common ratio
The equation is determined using:

Where

Substitute values for a and r

Apply law of indices:





<em>The above represents the explicit formula</em>
Answer:
12.9
Step-by-step explanation:
Answer:
I guess 21 is your answers.