Answer:
10
Step-by-step explanation:
So there are 5 pieces of rope, if you cut them all in half then that would double the number.
 
        
                    
             
        
        
        
The answer is 3.6  i know because i am a nerd 
        
                    
             
        
        
        
Answer:
40cm
Step-by-step explanation:
if the area is 100 then you have to do the square root of 100 which is 10.
each side is 10. 
10 x 4 because 4 equal sides
40
 
        
             
        
        
        
Answer:
About 1 gallon. (32/30)
Step-by-step explanation:
First get a LCM (least common multiple) for 3, 5, and 2. 
Now we have 30. Make 30 the denominator for all.
10/30
15/30
7/30
Then add them all up to get 32/30.
About 1 gallon.
 
        
                    
             
        
        
        
<h2>
Stella is correct about center and wrong about radius      </h2>
Step-by-step explanation:
Equation of circle with (h,k) as center and radius r is given by,
           (x-h)²+(y-k)² = r²
Here equation is
           x²−8x+y²+2y=5
Changing in to (x-h)²+(y-k)² = r² form
            x²−8x + 16 - 16 +y²+2y+1 - 1=5  
            (x-4)² - 16 + (y+1)² -1 = 5
            (x-4)²  + (y+1)²  = 22
            (x-4)²  + (y+1)²  = 4.69²
            Center is (4,-1) and radius is 4.69
Stella is correct about center and wrong about radius