Answer:
In algebra, like terms are terms that have the same variables and powers. The coefficients do not need to match.
Unlike terms are two or more terms that are not like terms, i.e. they do not have the same variables or powers. The order of the variables does not matter unless there is a power. For example, 8xyz2 and −5xyz2 are like terms because they have the same variables and power while 3abc and 3ghi are unlike terms because they have different variables. Since the coefficient doesn't affect likeness, all
 
        
                    
             
        
        
        
Correct answer is D). 
A) and C) are polynomials, so x∈R, in B) we have √x, and in this case x ≥ 0.
        
                    
             
        
        
        
I hope this helps you 
Area=pi.r^2
r^2=Area/pi
r= square root of Area/pi
        
             
        
        
        
Answer:
1.11333333
Step-by-step explanation:
I calculated using Symbolab
sorry if its wrong