He needs 84 ft.
Step by step explanation:
(24*2)+(18*2)
48+36
84
        
             
        
        
        
Answer:
I am on my phone and this is kinda confusing and I don't know if your asking 10x^5 or 10^5 but the answer would be 
100,000 if it is 10 to the 5th power
If it is 10x to the 5th power then it's 100,000x 
Step-by-step explanation:
I hope that helps :) explanation and answer is up!
 
        
                    
             
        
        
        
Answer:
225xxx   3
Step-by-step explanation:
 
        
                    
             
        
        
        
If u take 12 divided by .20 you would get 60 because if u think of it as a dinner bill say it is $60.00 and I want to give a 10% tip it would be $6 but if u give a 20% tip u would give $12