Arc Length and Area of Sector

What is the length L called?

• Sector

• Circumference

• Arc Length

• Area

Find the exact area of the shaded sector of the circle.

• 
• 
• 
• 

Find the approximate area of the shaded sector.

• 37.70 cm²

• 6.28 cm²

• 28.27 cm²

• 9.42 cm²

Find the area of the shaded sector. Round to the nearest hundredth.

• 7.92 units ²

• 24.74 units²

• 10.60 units²

• 98.19 units²

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 3

• Problem 2

• Problem 1

• Problem 4

Calculate the LENGTH of arc ADC.

• 5040 cm

• 43 cm

• 44 cm

• 14 cm

Calculate the LENGTH of arc WZY.

• 94.2 in

• 1413.7 in

• 47.1 in

• 353.4 in

Find exact length of the un-shaded part of the circle.

Match the following

• Area

• The distance around the circle.

• Arc Length

• The distance around a section of the circle.

• Circumference

• The amount of space inside the circle.

• Area of a Sector

• The amount of space inside a section of the circle.