A cube has 6 sides.
A cube is all made up of squares.
So, we need to find the area of one cube and multiply that by 6.
Length * width= area
40*40= 1,600 
Multiply that by 6.
1,600*6= 9600 
Whatever the unit is after that: in, feet, cm, m, etc- put that after the number with ^2. 
9,600 (the unit) ^2
I hope this helps!
~kaikers
        
             
        
        
        
Answer:measurement  of angle B is

<h3>Answer C is correct</h3>
Step-by-step explanation:

 
        
             
        
        
        
Answer:
9 cookies in her original handful
Step-by-step explanation:
3 times 4 equals 12
12-3=9 
 
        
             
        
        
        
Answer:
3x-4y=16
Step-by-step explanation:
 
        
                    
             
        
        
        
(m-21) (m+1)there I thinks it's right unless I messed up my work