Circles - Area Of Sector & Length Of Arc

This lesson covers:

  1. How to find the area of a sector
  2. How to find the length of an arc

The diagram below shows the sector of a circle. Calculate the area of the sector.

(Give your answer to 3 significant figures)

Diagram showing a sector of a circle with a radius of 6 cm and an angle of 120 degrees, used to calculate the area of the sector.
37.7

cm2

cm2

0

/

1

The diagram shows the sector of a circle. Calculate the length of the arc AB.

(Give your answer to 3 significant figures)

Diagram showing a sector of a circle with a 120-degree angle and radii of 6 cm. Calculate the length of arc AB.
12.6

cm

cm

0

/

1

The diagram below shows the sector of a circle. Calculate the area of the sector.

(Give your answer to 3 significant figures)

Diagram showing a sector of a circle with a 40 degree angle and an 18 cm radius.
113

cm2

cm2

0

/

1

The diagram shows the sector of a circle. Calculate the length of the arc AB.

(Give your answer to 3 significant figures)

Diagram showing a sector of a circle with a 40 degree angle and a radius of 18 cm.
12.6

cm

cm

0

/

1

The diagram below shows the sector of a circle. Calculate the area of the sector.

(Give your answer to 3 significant figures)

Diagram of a circle sector with a central angle of 70 degrees and a radius of 12 cm, used to calculate the area of the sector.
88.0

cm2

cm2

0

/

1

The diagram shows the sector of a circle. Calculate the length of the arc AB.

(Give your answer to 3 significant figures)

Diagram showing a sector of a circle with angle 70 degrees and radius 12 cm, used to calculate the length of arc AB.
14.7

cm

cm

0

/

1