Step-by-step explanation:
area of circle= πr²
3.14×7×7
153.86 is the required area
 
        
             
        
        
        
Distribute the two to each of the values in the parentheses.
-4 +6a-10= 1-1a
Then move like terms to the same side to simplify.
6a+1a=1+10+4
7a=15
a=15/7
        
             
        
        
        
Answer:50%
Step-by-step explanation:
 
        
             
        
        
        
Answer:
24.44%
Step-by-step explanation:
initial value :45
final value:56
change in value= 56-45=11
percentage change= 11


=24.44%