The length of radius of a circle 14 cm. Determine the circular value of angle subtended by an arc of 11 cm length at the centre of this circle.

The length of radius of a circle is 28 cm. Determine the circular value of angle subteded by an arc of 5.5 cm. Length at the centre of this circle.

The length of a radius of a circle is 28 cm. Determine the circuclar value of angle subtended by an arc of 5.5 cm length at the centre of of this circle.

The length of radius of a circle is 21 cm. Determine the cfircular and sexagesimal measures of the central angle produced by an are of length 5*5 cm of this circle.

If alpha_1 and alpha_2 be the circular measure of the angles subtended by the arcs of lengths s_1,s_2 at the centres of the circles whose radii are a_1,a_2 respectively , then show that the angle subtended at the centre by the arc of length (s_1+s_2) of a circle whose radius is 1/n(a_1alpha_1+a_2alpha_2) will be n radians.

Determine the angle in degree which an are of length 11 cm will produce at the centre of a circle with radius 12 cm.

An are of certain length subtends 20^@17' at the centre of a circle of radius 6 cm . Find in sexagesimal unit the angle subtended by the same arc at the centre of a circle of radius 8 cm .

A circular wire of radius 7 cm is cut and bend again into an arc of a circle of radius 12 cm. The angle substended by the arc at the centre of the circel is-

The length of diameter in a circle is 10 cm. If the distance from centre to chord of this circle is 4 cm, then find the length of this chord.

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 .