Question

find the radius of the circle whose center
is(o.o) and passing though (-6 ,
18)​

Answer 1

Answer:

Equation of circle with center (−1,2) is : (x+1)  

2

+(y−2)  

2

=r  

2

 

It passes through (5,6)

⇒(5+1)  

2

+(6−2)  

2

=r  

2

 

⇒r=  

52

​  

 

⇒equation of circle : (x+1)  

2

+(y−2)  

2

=52