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 ______.

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

Length of arc of a sector is______

Area of a sector of a circle of radius 15 cm is 30 cm^(2) . Find the length of the arc of the sector.

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

The angle at the center of a sector of a circle is 60^@ and the radius of the circle is 21 cm.Find the perimeter and the area of the sector of the circle.

Area of sector of a circle of radius 15 cm is 30 cm^2 . Find the length of the arc of the sector.

The angle of a sector of radius 14 cm is 90^(@) . The area of the sector is ________.

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 _______