To all of them ?what brainlies
        
             
        
        
        
Answer:
The center is (5, -2) and the radius is 9/2
Step-by-step explanation:
The equation of a circle can be written by
(x-h) ^2 + (y-k)^2 = r^2
where (h,k) is the center and r is the radius
 (x-5)^{2}+(y+2)^{2} = 81/4
( (x-5)^{2}+(y- -2)^{2} = (9/2)^2
The center is (5, -2) and the radius is 9/2
 
        
             
        
        
        
4:3
4 to 3
4/3
I wrote all the three ways
        
             
        
        
        
The answer is option 2, 
2x10^10
        
                    
             
        
        
        
You really just have to do 12.4 x 2 = 24.8 because half of 24.8 is 12.4.