A circular wire of radius 3 cm is cut and bent so as to lie along a circle of radius 48 cm. Find the angle subtended by the wire at the centre of the circle.

Draw a circle of radius 4 cm.

Draw a circle of radius 3.2 cm.

A wire 121 cm long is bent so as to lie along the arc of a circle of 90 cm radius. Find the degrees of angle subtended at the centre by the arc.

A circular wire of radius 7.5 cm is cut and bent so as to lie along the circumference of a circular hoop whose radius is 120 cm, find in degrees, the angle which is subtended at the centre of this loop.

In the following, give also the justification of the construction: Draw aline segment AB ol lengtb 8 cm. Taking A as centre,draw a circle of radius 4 cm and taking B as centre, draw another circle of radius 3 cm. Construct tangents to each circle from the centre of the other circle.

A chord of length 16 cm is drawn in a circle of radius 10 cm. Find the distance of the chord from the of the circle.

Calculate the length of the arc of a circle of radius 31.0 cm which subtends an angle of pi/6 at the centre.

Draw a line segment AB of length 8cm. Taking A as centre, draw a circle of radius 4cm and taking B as centre, draw another circle of radius 3cm. Construct tangents to each circle from the centre of the other circle.

In a circle of radius 21 cm, an arc subtends an angle of 60^@ at the centre. Find the length of the arc