Find the centre and the radius of the circles
`3x^(2) + 3y^(2) - 8x - 10y + 3 = 0`

Find the centre and radius of the circle 3x^(2) 3y^(2) - 6x +9y - 8 =0 .

Find the centre and the radius of the circle x^(2)+y^(2)+8x+10y-8=0

Find the centre and radius of the circles : 3x^2 + 3y^2 + 12x - 18y - 11=0

Find the centre and radius of the circles : x^2 + y^2 - 8x - 12y - 48=0

Find the centre and radius of the circle 3x^2 + 3y^2 - 8x - 10y + 3=0

Find the co-ordinates of the centre and radius of the circle 3x^(2) + 3y^(2) + 6x + 4y - 3 = 0

Find the centre and radius of the circle x^(2) + y^(2) + 6x -10y -2 =0