Since it is a square, the diagonals are congruent. If a square is split like this, it becomes two congruent right triangles. The relationship between the sides and hypotenuse is a 1:

 ratio. So if the diagonal of a square is 14 cm, then the side length would be 14/

, which is approximately 9.899. I don't understand what the answer choices are, but you should be able to square root the numbers to determine the answer. 
 
        
        
        
Answer: I think it is E sorry if I am wrong Step-by-step explanation: she returned to the same place so it going backwards (subtracting)
 
        
                    
             
        
        
        
Answer:
12%
Step-by-step explanation:
Percentage increase of something is often represented in a formula of a format like this:
X=Ar^t
Where X represents the total amount after t years.
A or 87000 in this case represents the starting value, which is this case is the starting population of the town. r or 1.12 represents the percentage increase, if it increases by 12% than the next year has 1.12 times as many people as the previous year so this is represented by 1.12 rather than say 0.12 which would indicate a 88% decrease instead.  t is the time, no. of years in this case, that has elapsed since 1996.
This formula basically means that a town population of 87000 increases by 12% for every year of time that elapses. 
Hope this helped!