The equation for a circle is 
(x-h)² + (y-k)² = r²
h = your given x 
y = your given k 
Let's plug everything in! 
(x - 5) ² + (y - (-1)) ² = 12²
Your final equation is 
(x - 5) ² + (y + 1) ² = 144
<em>Hope I helped! Comment or message me if you have any questions :) </em>
 
        
             
        
        
        
Answer:
36
Step-by-step explanation:
3*2=6
6^2 is 36
 
        
             
        
        
        
She has a total of 170 cubes 
170/10=17 trains
        
                    
             
        
        
        
SO from what I did was...
Since 24 x 3 = 72 , I did the same to 16. 
16 x 3 = 48 
But because instead of their being 3 teachers there is 1... What I did is just was to divide 48 / 2 which gave me the answer of 24... 
So what I think the answer is... 
There are 72 boys, 24 girls, and 1 teacher... 
Unless I am just dumb and it would be 48 girls, but I think I did it right. 
I hope I was able to help out.
        
             
        
        
        
The answer would be 0.13658537...
but when you estimate it the answer would be 0.14