Curated OER
How Do You Find the Area of a Circle if You Know the Diameter?
Do you know the formula to find the area of a circle? Do you know the value of pi? Do you know what the relationship is between diameter and radius? Yes? Then you can solve this problem. If your scholars don't know this formula then this...
Curated OER
What is the Formula for the Area of a Circle?
Cut up a circle and make a parallelogram! What? No way! Yes way! Watch the instructor illustrate just how to cut up the circle and get that parallelogram to then get the formula for the area of a circle. It really works! Base,...
Sophia Learning
Sophia: Finding Surface Area With Squares: Lesson 6
Following this lesson, you'll be able to use squares to find the total surface area of a figure. It is 6 of 7 in the series titled "Finding Surface Area with Squares."
Sophia Learning
Sophia: Finding the Area of a Sector Using the Central Angle: Lesson 3
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]
Sophia Learning
Sophia: Finding the Area of a Sector Using the Central Angle: Lesson 4
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]
Sophia Learning
Sophia: Finding the Area of a Sector Using the Central Angle: Lesson 1
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]
Sophia Learning
Sophia: Finding the Area of Composite Figures: Lesson 4
This lesson explains how to break composite figures into more simple shapes in order to find its area. It is 4 of 4 in the series titled "Finding the Area of Composite Figures."
CK-12 Foundation
Ck 12: Elem Math: Overview of Area and Perimeter
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview on the area and perimeter of squares and rectangles.
CK-12 Foundation
Ck 12: Elem Math: Overview of Area and Perimeter of Rectangle
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview on how to find the area and perimeter of a rectangle.
CK-12 Foundation
Ck 12: Elem Math: Overview of Area and Perimeter of Squares
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview on how to find the area and perimeter of squares.
Khan Academy
Khan Academy: Geometry: Perimeter and Area of a Non Standard Polygon
Explains how to find the perimeter and area of a non-standard, or irregular polygon. [3:03] CCSS.Math.Content.3.MD.C.7.d Recognize area as additive.
Khan Academy
Khan Academy: Decomposing Shapes to Find Area: Subtract
Demonstrates how to find the area of a rectangular shape enclosed by another rectangle and with a third one inside it. [3:12]
Other
Mario's Math Tutoring: Find the Area of Regular Polygons
Learn how to find the area of a regular polygon using the formula A=1/2ap in this free math video tutorial [5 mins, 17 secs]with two examples by Mario's Math Tutoring.
Sophia Learning
Sophia: Finding Surface Area With a Grid: Lesson 4
Step by step, this lesson will show you how to add up the number of squares on the grid that are covered/contained by the object in order to find the surface area of a figure. It is 4 of 7 in the series titled "Finding Surface Area with...
Sophia Learning
Sophia: Finding Surface Area With a Grid: Lesson 5
Step by step, this lesson will show you how to add up the number of squares on the grid that are covered/contained by the object in order to find the surface area of a figure. It is 5 of 7 in the series titled "Finding Surface Area with...
Sophia Learning
Sophia: Finding Surface Area With a Grid: Lesson 7
Step by step, this lesson will show you how to add up the number of squares on the grid that are covered/contained by the object in order to find the surface area of a figure. It is 7 of 7 in the series titled "Finding Surface Area with...
Sophia Learning
Sophia: Finding the Area of an Sas Triangle: Lesson 4
Finding the are of an SAS triangle is demonstrated in this lesson. It is 4 of 7 in the series titled "Finding the Area of an SAS Triangle."
Sophia Learning
Sophia: Finding the Area of an Sas Triangle: Lesson 6
Finding the are of an SAS triangle is demonstrated in this lesson. It is 6 of 7 in the series titled "Finding the Area of an SAS Triangle."
Sophia Learning
Sophia: Finding the Area of an Sas Triangle: Lesson 1
Finding the are of an SAS triangle is demonstrated in this lesson. It is 1 of 7 in the series titled "Finding the Area of an SAS Triangle."
Sophia Learning
Sophia: Finding the Area of an Sss Triangle: Lesson 3
Finding the are of an SSS triangle is demonstrated in this lesson. It is 3 of 7 in the series titled "Finding the Area of an SSS Triangle."
Sophia Learning
Sophia: Finding the Area of an Sss Triangle: Lesson 5
Finding the are of an SSS triangle is demonstrated in this lesson. It is 5 of 7 in the series titled "Finding the Area of an SSS Triangle."
Sophia Learning
Sophia: Finding the Area of an Sss Triangle: Lesson 6
Finding the are of an SSS triangle is demonstrated in this lesson. It is 6 of 7 in the series titled "Finding the Area of an SSS Triangle."
Sophia Learning
Sophia: Finding the Area of a Sector Using the Central Angle: Lesson 5
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."
Sophia Learning
Sophia: Converting Between Square Feet and Square Yards
This lesson demonstrates the conversion between square feet and square yards.