[" 12.The least distance of the line "8x-4y+73=0],[" the circle "],[16x^(2)+16y^(2)+48x-8y-43=0" is "]

The least distance of the line 8x-4y+73=0 from the circle 16x^(2)+16y^(2)+48x-8y-43=0

The least distance of the line 8x-4y+73=0 from the circle 16x^(2)+16y^(2)+48x-8y-43=0 is

The least distance of the line 8x -4y+73=0 from the circle 16x^2+16y^2+48x-8y-43=0 is

The least distance of the line 8x -4y+73=0 from the circle 16x^2+16y^2+48x-8y-43=0 is

The radius of the circle 16 x^(2)+16 y^(2)-8 x+32 y-256=0 is

The line 4y-3x+lambda=0 touches the circle x^(2)+y^(2)-4x-8y-5=0 then lambda=

The least distance between two points P and Q ,where P lies on the circle x^(2)+y^(2)-8x-10y+37=0 and Q lies on the circle , x^(2)+y^(2)+16x+55=0 is equal to

The least distance between two points P and Q on the circle x^(2) + y^(2) -8x + 10y + 37 =0 and x^(2) + y^(2) + 16x + 55 = 0 is _______ .

The least distance between two points P and Q on the circle x^(2) + y^(2) -8x + 10y + 37 =0 and x^(2) + y^(2) + 16x + 55 = 0 is _______ .