Instructional Video2:23
Curated OER

What is a Sector and Central Angle?

6th - 10th
Slice a large piece of pie or slice a small piece of pie? Whichever way you slice it, this piece of pie would be a fraction of the whole pie. This analogy corresponds with the sector of a circle being a piece of the pie. The size of the...
Instructional Video5:36
Curated OER

What is the Formula for the Area of a Sector of a Circle?

9th - 12th
Are you looking for the formula for the area of a sector of a circle? But what's a sector? A sector is just a fraction of the area of a circle. Follow the instructor as she illustrates and labels the different parts of a circle. She also...
Instructional Video
Sophia Learning

Sophia: Finding the Area of a Sector Using the Central Angle: Lesson 3

9th - 10th Standards
This lesson explains how the central angle can be used to determine the area of a sector. It is 3 of 5 in the series titled "Finding the Area of a Sector Using the Central Angle." [8:03]
Instructional Video
Sophia Learning

Sophia: Finding the Area of a Sector Using the Central Angle: Lesson 4

9th - 10th Standards
This lesson explains how the central angle can be used to determine the area of a sector. It is 4 of 5 in the series titled "Finding the Area of a Sector Using the Central Angle." [4:53]
Instructional Video
Sophia Learning

Sophia: Finding the Area of a Sector Using the Central Angle: Lesson 1

9th - 10th Standards
This lesson explains how the central angle can be used to determine the area of a sector. It is 1 of 5 in the series titled "Finding the Area of a Sector Using the Central Angle." [2:53]
Instructional Video
Virtual Nerd

Virtual Nerd: How Do You Find the Area of a Sector of a Circle?

9th - 10th
Take a look at this tutorial to discover how to find the area of a sector of a circle. [4:23]
Instructional Video
Virtual Nerd

Virtual Nerd: What Is a Sector and Central Angle?

9th - 10th
This tutorial provides an introduction to the term sector and gives you examples of sectors. [2:23]
Instructional Video
Sophia Learning

Sophia: Formula for the Area of a Sector

9th - 10th Standards
Using prior knowledge of a circle to determine the formula for the area of a sector. Complete assessment to check understanding.
Instructional Video
Sophia Learning

Sophia: Sector Area of a Circle

9th - 10th Standards
This video lesson demonstrates how to find the radius and area of a circle using the area of a sector and a central angle measurement. Students can check their understanding with an assessment.
Instructional Video
Khan Academy

Khan Academy: Area of a Sector

9th - 10th
A worked example of finding the area of a circle's sector using the area of the circle and the central angle of the sector.
Instructional Video
Sophia Learning

Sophia: Finding the Area of a Sector Using the Central Angle: Lesson 5

7th - 8th
This lesson explains how the central angle can be used to determine the area of a sector. It is 5 of 5 in the series titled "Finding the Area of a Sector Using the Central Angle."
Instructional Video
Sophia Learning

Sophia: Sector of a Circle: Lesson 10

9th - 10th
This lesson will define the term sector. It is 10 of 10 in the series titled "Sector of a Circle."
Instructional Video
Sophia Learning

Sophia: Sector of a Circle: Lesson 4

9th - 10th
This lesson will define the term sector. It is 4 of 10 in the series titled "Sector of a Circle."
Instructional Video
Sophia Learning

Sophia: Sector of a Circle: Lesson 7

9th - 10th
This lesson will define the term sector. It is 7 of 10 in the series titled "Sector of a Circle."
Instructional Video
Sophia Learning

Sophia: Sector of a Circle: Lesson 1

9th - 10th
This lesson will define the term sector. It is 1 of 10 in the series titled "Sector of a Circle."
Instructional Video
Sophia Learning

Sophia: Sector Area of a Circle: Lesson 1

7th - 8th
This lesson will demonstrate how to find the area and radius of a circle when given the sector area and central angle measure. It is 1 of 8 in the series titled "Sector Area of a Circle."
Instructional Video
Sophia Learning

Sophia: Sector of a Circle: Lesson 3

9th - 10th
This lesson will define the term sector. It is 3 of 10 in the series titled "Sector of a Circle."
Instructional Video
Sophia Learning

Sophia: Central Angle

6th - 8th
This video lesson describes the term central angle.
Instructional Video
Sophia Learning

Sophia: Sector Area of a Circle: Lesson 5

9th - 10th Standards
This lesson will demonstrate how to find the area and radius of a circle when given the sector area and central angle measure. It is 5 of 8 in the series titled "Sector Area of a Circle."
Instructional Video
Sophia Learning

Sophia: Sector Area of a Circle: Lesson 7

9th - 10th
This lesson will demonstrate how to find the area and radius of a circle when given the sector area and central angle measure. It is 7 of 8 in the series titled "Sector Area of a Circle."
Instructional Video
Sophia Learning

Sophia: Sector Area of a Circle: Lesson 8

9th - 10th
This lesson will demonstrate how to find the area and radius of a circle when given the sector area and central angle measure. It is 8 of 8 in the series titled "Sector Area of a Circle."