Lesson: Area of a Sector

Lesson: Area of a Sector of a Circle

If I want to find the area of an part of a circle, how would I do it?

Area of a Sector

Example 1:

Example 2

Multiple Choice

Find the area of a sector with a radius of 9ft and an angle measure of  $$132\degree$$  

• $$10.27ft^2$$  

• $$93.31ft^2$$  

• $$29.7ft^2$$  

• $$85ft^2$$  

Fill in the Blank

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

Multiple Choice

What is the area of the shaded sector?

• $$6.56yd^2$$

• $$7.49yd^2$$

• $$8.72yd^2$$

Multiple Choice

What is the formula for finding the area of a sector. 

• $$\left(\frac{n}{360}\right)\pi r^2$$

• $$\left(\frac{n}{2\pi}\right)\pi r^2$$

• $$\pi r^2$$