If two circles of the same radius `r` and centres at `(- 1, 2)` and `(3, 6)` respectively cut orthogonally, then the value of `r` is

If the circles of same radius 'a' and centres at (2, 3) and (5, 6) cut orthogonally, then a =

If the circles of same radius a and centers at (2, 3) and 5, 6) cut orthogonally, then find adot

If the circles of same radius a and centers at (2, 3) and (5, 6) cut orthogonally, then find a.

If the circles of same radius a and centers at (2, 3) and (5, 6) cut orthogonally, then find a.

If the circles of same radius a and centers at (2, 3) and (5, 6) cut orthogonally, then find a.

If the circles of same radius a and centers at (2,3) and (5,6) cut orthogonally,then find a .

The radius of one circle is twice the radius of another circle whose centres are (2,0) (1,2) respectively cutting orghogoanlly.Then the radius of the first circle is

If the circles of same radius a and centres (2,3), (5,6) cut orthogonally , then a=

Two circles C _(1) and C _(2) with equal radii r are centered at (3,2) and (6,5) respectively. If C _(1) and C _(2) intersect orthogonally, then r is equal to.