The answer is about 12.5 (when rounded to the nearest 10th). 
This can be found using the distance formula between each point. One distance is 5, one is 

 and one is 

. Added together gives you the answer above. 
 
        
        
        
Answer:
44
Step-by-step explanation:
I hope this helps!
 
        
             
        
        
        
Answer:
21
Step-by-step explanation:
 
        
             
        
        
        
Answer:
1. surface area, 2. volume. 3. surface area, 4. volume
Step-by-step explanation:
The stain means it's just the surface of the box, and not what can go in it. 
the question is asking how many shoe boxes can fit IN
 
        
             
        
        
        
70 × 20% 
70 × .20 = .14
so .70 - .14 = $.56