Answer:
The fourth one 
Step-by-step explanation:
I know that is correct 
 
        
             
        
        
        
Answer:
Honey, I don't know what you need help with. Nothing is linked.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
1/2
Step-by-step explanation:
First square area = 4cm^2, thus the side length is 2cm
Second square area = 16cm^2, thus the side length is 4cm
This gives a ratio of 2/4, simplifying yields 1/2
 
        
             
        
        
        
Answer:
171
Step-by-step explanation:
180 - (5% × 180) 
180 - 5% × 180 
(1 - 5%) × 180 
(100% - 5%) × 180 
95% × 180 
95 ÷ 100 × 180 
95 × 180 ÷ 100 
17,100 ÷ 100 = 171.