Not sure if you wanted answers or explanation on what to do. Ill just do the explanation and if you want the answers just lmk C:
R=1/2 d, and C=pi*2r. So you basically take the given number and plug it into these formulas.
        
                    
             
        
        
        
We have that
scale factor=1 in/2.5 miles
<span>the actual area of a lake is 12 square miles
</span>we know that
[area on the map]=[scale factor]²*[area actual]
[area on the map]=[1/2.5]²*[12]-----> 1.92 in²
the answer is
1.92 in²
        
             
        
        
        

Step-by-step explanation:
Given

So

Hence,

Keywords: functions, Function composition
Learn more about functions at:
#LearnwithBrainly
 
        
             
        
        
        
Answer:

Step-by-step explanation:
 =3x^4/x^16
=3x^4/x^16
bring "x^4" to the bottom to subtract it with x^16
3/x^16*x^-4
3/x^12
hope this helps!