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.
        
                    
             
        
        
        
The answer is 6 whole number and 3\4 cannot be the whole number.
        
             
        
        
        
V = π*r^2*h
(9000 in^3/min)*(10 min) = π*(72 in)^2*h
h = (90,000 in^3)/(5184π in^2) ≈ 5.5 in
        
                    
             
        
        
        
Answer:
If the second person's pay is 891, then the 5th should be 1002.