CK-12 Foundation
Calculating Area of a Circle: Lesson
It really is as easy as pi. The segment of a massive geometry playlist points out that the formula for the area of a circle is a relatively simple one. Using the formula, the presenter shows examples of finding the area of circles.
Curated OER
Area of a Circle
A second installment in a series on circles, this production demonstrates the process of finding the area of a circle. As an introductory tool, it is effective. However, it does not explain the reasoning behind the formula because that...
Curated OER
Tau vs. PI
What�s wrong with Pi? In this video, Sal considers the question whether the number Tau (_), is a better number to use in our trigonometric model then the traditional PI (�). First, Sal reviews the definition of Pi, the trigonometric...
Khan Academy
Speed Translation
Teaching young mathematicians to use consistent units in their expressions as well as numbers, Sal demonstrates several ways to translate speed units in pre-algebra. He encourages viewers to memorize common speed units, such as the...
Numberphile
Tau vs Pi Smackdown
Who wins the tau vs pi debate? Two mathematicians share their view of whether tau or pi is better in a video from the Numberphile Pi series. Spoiler alert: Pi wins.
CK-12 Foundation
Area and Perimeter of Rhombuses and Kites: Lesson
Flip the triangles up and create a parallelogram. Using the idea of transformations, the video develops the area formula for rhombi and kites. The segment of an extensive geometry playlist uses the formula to find the areas of different...
Curated OER
How Do You Find the Area of a Sector of a Circle?
How do you find the area of a sector of a circle? Use the formula of course. Then all you have to do is plug in the given values and do the math. Make sure you are following the rules of order of operation. The instructor will walk you...
Curated OER
The Story of India - Ages of Gold - 1/7
Every culture has a golden age. While Europe was in the Dark Ages, India was thriving and warm in an age of gold. The story of Rama, society, culture, and the Gupta Empire set the stage for this seven-part series on India's golden age.
Curated OER
What is a Circle?
A circle is a set of all the points that are equal distance from a center point. Learn the definition of some of the terms that are associated with a circle: diameter, radius, chord.
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
How Do You Find the Area of a Circle if You Know the Radius?
There are basically two things you need to know to find the area of a circle. First, you need to use the correct formula. Second, you have to know the value of the radius. If you know these two things then all you have to do is plug the...
Other popular searches
- Circumference of a Circle
- Circumference and Diameter
- Circumference of Circles
- Radius Circumference
- Circumference Diameter
- Perimeter and Circumference
- Area and Circumference
- Circle Circumference
- Circles/circumference/diameter
- Circle and Circumference
- Circumference Area of Circle
- Circumference and Arc Length