The distance of a chord of length 8 cm from the centre of a circle of radius 5 cm is:

An arc of length 121 cm makes an angle 77° at the centre of a circle. The radius of the circle is

The radius of a circle is 14 cm and the area of a sector is 102.7 sq. cm. The central angle of the sector is

If the difference between the circumference and radius of a circle is 37 cm, then the area of the circle is

The length of a wire is 66 metre, then the number of circles of circumference 1.32 cm that can be made from the wire is :

The area of a circle is 40π² . The area of a square with sides equal to radius of the circle is