Consider the circles `x^2+(y-1)^2=9,(x-1)^2+y^2=25.` They are such that these circles touch each other one of these circles lies entirely inside the other each of these circles lies outside the other they intersect at two points.

Consider the circles x^2+(y-1)^2=9,(x-1)^2+y^2=25. They are such that a.these circles touch each other b.one of these circles lies entirely inside the other c.each of these circles lies outside the other d.they intersect at two points.

The two circles touch each other if

Prove that x^2+y^2=a^2 and (x-2a)^2+y^2=a^2 are two equal circles touching each other.

Prove that x^2+y^2=a^2 and (x-2a)^2+y^2=a^2 are two equal circles touching each other.

The line 2x-y+1=0 is tangent to the circle at the point (2,5) and the centre of the circles lies on x-2y=4. The radius of the circle is :

The line 2x-y+1=0 is tangent to the circle at the point (2,5) and the centre of the circles lies on x-2y=4 The radius of the circle is:

The line 2x-y+1=0 is tangent to the circle at the point (2,5) and the centre of the circles lies on x-2y=4. The radius of the circle is

inside the circles x^2+y^2=1 there are three circles of equal radius a tangent to each other and to s the value of a equals to

inside the circles x^2+y^2=1 there are three circles of equal radius a tangent to each other and to s the value of a equals to