Answer:
The value of the expression would be 11.
Step-by-step explanation:
3 (4 - n) + 8 
When n = 3:
3 (4 - 3) + 8
3 (1) + 8
3 + 8
11
 
        
                    
             
        
        
        
For this case we have to define root properties:
![\sqrt [n] {a ^ n} = a ^ {\frac {n} {n}} = a](https://tex.z-dn.net/?f=%5Csqrt%20%5Bn%5D%20%7Ba%20%5E%20n%7D%20%3D%20a%20%5E%20%7B%5Cfrac%20%7Bn%7D%20%7Bn%7D%7D%20%3D%20a)
In addition, we know that:

On the other hand:

Thus, we can rewrite the given expression as:

ANswer:
Option B
 
        
             
        
        
        
It is -25
im  practically a math genuis
        
                    
             
        
        
        
Area of one piece is 26.24cm ^2 or just 13.12cm