Q83. Let the centre of a circle, passing through the points $( 0,0 ) , ( 1,0 )$ and touching the circle $x ^ { 2 } + y ^ { 2 } = 9$, be $( h , k )$ - Then for all possible values of the coordinates of the centre $( h , k ) , 4 \left( h ^ { 2 } + k ^ { 2 } \right)$ is equal to