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

1 thought on “find the radius of the circle whose center<br />is(o.o) and passing though (-6 ,<br />18)​”

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

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