0.4x10^-3
Adding random characters here.
        
                    
             
        
        
        
Where’s the picture of the question or the blank?
        
             
        
        
        
Answer:
T = 3
Step-by-step explanation:
To find the period, find the distance it takes to complete one cycle. 
 
        
             
        
        
        
Answer:
C = 24.5 in
Step-by-step explanation:
Formula to find the circumference of a circle is :
C = 2πr
Here,
r ⇒ radius
So let us solve now.
C = 2πr
C = 2 × π × r
C = 2 × 3.14 × 3.9
C = 24.492 in
So, they've asked for nearest 10th.
Therefore, the answer will be 24.5 in.
Hope this helps you :-)
Let me know if you have any other questions :-)
 
        
                    
             
        
        
        
perimeter = 2L +2w
L = w+11
70 = 2(w+11) +2w
70 = 2w+22+2w
70= 4w + 22
48 = 4w
w=48/4 = 12
width = 12
length = 12+11 = 23
2x12 = 24
2x23 = 46
46+24 = 40
 length = 23 inches, width = 12 inches
Answer is D