If the angle of a sector is `45^(@)` and the radius of the sector is 28 cm then the length of the arc is _________.

If the angle of a sector is 30^(@) and the radius of the sector is 21 cm, then length of the arc of the sector is ______.

The angle of a sector is 120^(@) and its radius is 21 cm. The area of the sector is ______.

In a circle of radius 28 cm, an arc subtends an angle of 108^(@) at the centre . (a) Find the area of the sector. (b) Find the length of the arc.

Length of arc of a sector is 16 cm and radius of a circle is 7 cm the area of sector is____________ cm^2

The angle of a sector of a circle is 72^(@) and radius of the circle is 10 m. The ratio of the circumference of the circle and the length of the arc of the sector is ________.

The angle of a sector of a circle is 108^(@) and radius of the circle is 15 m. The ratio of the circumference of the circle and the length of the arc of the sector is _______

Length of arc of a sector is______