In figure `angleOAB=60^(@) and OA=6cm` then the radius of the circle is ____.

Length of two chords AB and CD of a circle with centre O are equal. If angleAOB = 60^@ and CD = 6cm then find the length of the radius of the circle.

In the given figure, ABC is a right angled triangle. angleABC=90^(@) and angleACB=60^(@) . If the radius of the smaller circle is 2 cm, then what is the radius (in cm) of the larger circle?

In the figure , angleOAB = ……..

In figure, angleACB=40^(@) ." Find "angleOAB .

The length of two chords AB and CD of a circle with its centre O are equal . If angle AOB 60^(@) and CD = 6cm then calculate the length of the radius of the circle .

In the given figure, ABC is a right angled triangle. /_ ABC=90^0 and /_ ACB=60^0 . If the radius of the smaller circle is 2 cm, then what is the radius (in cm) of the larger circle?

In the adjoining figure, O is the centre of the circle and AB is its diameter. If AC=8 cm and BC= 6cm, then find the radius of the circle.

In the adjoining figure, O is the centre of the circle and AB is its diameter. If AC=8 cm and BC= 6cm, then find the radius of the circle.

In the following figure ,Point A is the centre of the circle. Line MN is tangent at point M. IF AN=12cm and MN=6cm, determine the radius of the circle.