Centre of the circle inscribed in a rectangle formed by the lines `x^2 - 8x+12 = 0` and `y^2 - 14y +40=0` is

Centre of the circle circumscribed in a rectangle formed by the lines x^(2)-8x+12=0 and y^(2)-14y+40=0 is

The centre of the circle inscribed in a square formed by the lines x^(2) - 8x+12 = 0 and y^(2) - 14 + 45 = 0 is

If the centre of the circle inscribed in a square formed by the lines x ^(2) - 8x + 12 =0 and y ^(2) - 14 y + 45 = 0 is (a,b), then a + b is

The diagonal of the rectangle formed by the lines x^2-7x +6= 0 and y^2-14y +40= 0 is

The radius of the circle inscribed in the triangle formed by the lines x = 0, y = 0 and 4x + 3y - 24 = 0 is :

The centre of circle inscribed in a square formed by lines x^2-8x+12=0 and y^2-14 y+45=0 is

The centre of circle inscribed in a square formed by lines x^2-8x+12=0 and y^2-14 y+45=0 is

The centre of circle inscribed is square formed by lines x^2-8x+12=0 and y^2-14y+45=0 is