Answer:

Step-by-step explanation:
We are given that 
Length of rope=l=160 feet 
Radius of quadrant of circle=r=160 feet 
We have to find the  maximum grazing area of the cow.
We know that 
Area of quadrant of circle=
Where 
Using the formula 
Area grazed by cow=
Area grazed by cow=
 
        
             
        
        
        
I beleive it is a because both variable could change
        
             
        
        
        
Answer:
3000000000
Step-by-step explanation:
Dividing 9*10^7 by 3, we have 3*10^7
Same with 3*10^-2 so we have 
(3*10^7)/(1/100) which is equal to 3*10^7*100 which is equal to 3000000000
Please give me Brainliest if im correct
 
        
             
        
        
        
The second yes is the answer