Patterns can be used to determine products of a number of a power of 10 by following it to obtain easily the answer. When you multiply a number by the power of 10 you just have to write the number then add the number of corresponding number of 0s to the end which will be the same number as the power used. 
Hope this helped : )
        
                    
             
        
        
        
Answer:
29.83
Step-by-step explanation:
you just multiply 9.5 times 3.14
 
        
                    
             
        
        
        
add 4n and 5n, which is 9. 9n=-9, and if u divide both sides by nine, n=-1
 
        
                    
             
        
        
        
The base is the greatest surface area
        
             
        
        
        
Answer:
6xwidthxlength
Step-by-step explanation:
it’s basic