Volume ratio = 1331/729 which is the cube of the linear scale factor. 
To find the linear scale factor, let find the cubic root of the numerator & the denominator:
∛1331 = ∛11³  = 11
&  ∛729 = ∛9³  = 9
So the linear scale is 11/9 ==> then the ratio of their surface area will be:
11²/9² ==> 121/81.
Note, if you have a linear scale, then the surface will be the square othis scale & the volume will be the cube of the linear scale
        
             
        
        
        
Well area of a triangle is

so,

The answer is 8
 
        
        
        
Answer:(5/3,5/3)
Step-by-step explanation: I did the test ;D
 
        
                    
             
        
        
        
You would get 2015.17568 as the interest rate i believe