Question

UPLOADED

Answer 1

centre of circle is 1/2 *4 , 1/2*2 = (2,1)
so distance from (5,-9)
= sqrt(5-2)^2 + (-9-1)^2) = sqrt (109) = 10.44

Answer 2

u can find the centre of circle by comparing your eqaution aganst stanrdard on

x^2 + y^2 - 2ax - 2by = c
centre = (a,b)