The center of the circle is located ...... the circle.

Consider a circle with the X and Y axes as tangents to it in the first quadrant.If the line x+3y=8 passes through the center of the circle and the radius of the circle equals k, then find the value of 3k

The length of a chord of a circle is 16 cm and distance of chord is 15 cm from the center of the circle then find the radius of the circle.

The equation of a circle is x^(2)+y^(2)=4. Find the center of the smallest circle touching the circle and the line x+y=5sqrt(2)

The locus of the center of a circle which touches the circles |z-z_(1)|=a,z-z_(2)=b| externally will be

In the given figure (not to scale), O is the center of the circle C_(1) and AB is the diameter of the circle C_(2) . Quadrilateral PQRS is inscribed in the circle with center O. Find angleQRS .

Two circles are given such that they neither intersect nor touch.Then identify the locus of the center of variable circle which touches both the circles externally.

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