Is this asking about surface area or volume?
        
                    
             
        
        
        
Answer:
The required rate of interest   =   14.285%
Step-by-step explanation:
Here, The principal amount = 7,000
The final paid amount = 9,000
Time = 2 years
Let us assume the rate of interest = R
Now, Simple Interest  =  Amount - Principal
                                        =  9,000 - 7,000  = 2,000
So, the SI on the given principal for 2 years  = 2,000

or, R =  14.285%
Hence, the required rate of interest   =   14.285%
 
        
             
        
        
        
Answer:
The correct answer would be 10ft
 
        
             
        
        
        
Answer:
14.25 - d
Step-by-step explanation: