Area Sector and Arc Length

What is the length L called?

• circumference

• tangent

• arc

• sector

What is the green area called?

• sector

• segment

• arc

• section

Calculate the length of the bold arc.

• 5040 cm

• 43 cm

• 44 cm

• 14 cm

Find the length of the bold arc.Leave pi in your answer.

• 5688π ft

• 15.8π ft

• 150.4π ft

• 54,150 ft

The diagram shows a sector of a circle of radius 4 units, formed from an angle of size 135°.

Find the length of the arc rounded to two decimal places.

Mathematical Equivalence

ON

Match the answers to the following problems.

• Problem 4

• Problem 1

• Problem 2

• Problem 3

Find the area of a sector with a radius of 6 units and a central angle of 60 degrees.

Find the area of a sector with a radius of 10 units and a central angle of 90 degrees.

Find the arc length.  Leave your answer in terms of π.

• 7/4π

• 7/2π

• 1/8π

• 45π

Find the area of each sector.

• 52.4 in²

• 18,864 in²

• 60 in2

• 10.47 in