(True/ False) Line segment joining the centre to any point on the circle is a radius of the circle.

The length of a tangent from a point A at distance 5 cm from the centre of the circle is 4 cm.Find the radius of the circle.

The line joining the centre of a circle to the mid-point of a chord is perpendicular to the chord.

State True or False Line segment can be compared in terms of their lengths .

The centre of a circle lies in .............. of the circle.

In each of the following state if the statement is true or false: The centre of a circle is a point of the circle.

The centres of two circles C_(1) and C_(2) each of unit radius are at a distance of 6 unit from each other. Let P be the mid-point of the line segment joining the centres of C_(1) and C_(2) and C be a circle touching circles C_(1) and C_(2) externally. If a common tangent to C_(1) and C passing through P is also a common tangent to C_(2) and C, then the radius of the circle C, is