[" 4.All "L=hr^(m)],[" 4.Suppose that the equation of the circle having "(-3,5)" and "(5,-1)" as end points of a "],[(x-a)^(2)+(y-b)^(2)=r^(2)." Then "a+b+r,(r>0)" is "]

Suppose that the equation of the circle having (-3,5) and (5,-1) as end points of a diameter is (x-a)^(2)+(y-b)^(2)=r^(2) .Then a+b+r,(r>0) is: (A)8(B)9(C)10(D)11

The equation to the locus of the midpoints of chords of the circle x^(2)+y^(2)=r^(2) having a constant length 2l is

The equation to the locus of the midpoints of chords of the circle x^(2)+y^(2)=r^(2) having a constant length 2l is

The eccentric angles of the ends of L.R. of the ellipse (x^(2)/(a^(2))) + (y^(2)/(b^(2))) = 1 is

The eccentric angles of the ends of L.R. of the ellipse (x^(2)/(a^(2))) + (y^(2)/(b^(2))) = 1 is

If the circles (x-a)^(2)+(y-b)^(2)=r^(2), (x-b)^(2)+(y-a)^(2)=r^(2) touch each other then the point of contact is

If r_(1) and r_(2) are the radii of the smallest and the largest circles,respectively,which pass though (5,6) and touch the circle (x-2)^(2)+y^(2)=4, then r_(1)r_(2) is (4)/(41) (b) (41)/(4)(5)/(41) (d) (41)/(6)