KnowMo
Calculating Area and Circumference of Circles
This video is a tutorial on how to calculate the area and circumference of circles using formulas such as pi times the radius squared or pi times the diameter of the circle. The video explains the importance of rounding the final answer...
Visual Learning Systems
Understanding Circumference of Circles
This video explains how to calculate the circumference of a circle using both the diameter and the radius. It introduces the concept of π as a ratio that relates the circumference to the diameter. This video is part of the 8-part series,...
Curated Video
How to Find the Circumference of a Circle |7.G.B.4
Learn How to Find the Circumference of a Circle AND the Perimeter of a Semi-Circle!* Wait… what’s the difference between circumference and *perimeter*? What’s the best way to remember those circle formulas? And should you use *3.14* or...
Brian McLogan
Master Finding the area and circumference of a circle and shaded regions
Master Finding the area and circumference of a circle and shaded regions
Curated Video
Finding the Circumference of a Circle
This video explains how to find the circumference of a circle when given either the diameter or the radius. We also explain you how the formula is derived. Practice questions and solutions at the end of the video.
TMW Media
Circles And Circular Figures: Learn about the circumference of a circle
What is a diameter? What is a radius? Explain the circumference of a circle. What is the formula for a circumference? What is Pi? Circles And Circular Figures, Part 1
Curated Video
Finding the Circumference of a Circle
In this video, the teacher explains how to find the circumference of a circle by exploring the ratio of the diameter and circumference. The concept of constant proportionality and the use of pi as an approximate value are also discussed.
Curated Video
Circles and Circumference
This video lesson will review key vocabulary terms about circles and finding circumference of circles and semicircles. Students will learn how to describe a circle in terms of radius and diameter, understand the concept of pi, and find...
Curated Video
Find the Area of a Circle from the Circumference
In this short video we will answer a standardized math test question where we are asked to find the area of a circle when given the circumference of the circle. We will identify the formulas for area and circumference of a circle. We...
Curated Video
Circumference and Area of a Circle
In this video, a math teacher guides students through test prep questions related to circumference and area of circles. Using formulas and rounding techniques, the teacher helps students arrive at the correct answers and provides helpful...
Jam Campus
Circle Song
Learn the area, diameter, and circumference of a circle through song! A great way to boost classroom engagement when introducing new topics.
Brian McLogan
What is the measure of one radian
👉 Learn about angles in trigonometry. An angle is the figure formed by two rays sharing the same endpoint. The two rays are called the sides of the angle while the common endpoint of the two rays is called the vertex of the angle. Angle...
Brian McLogan
What is the radian measure of an angle
👉 Learn about angles in trigonometry. An angle is the figure formed by two rays sharing the same endpoint. The two rays are called the sides of the angle while the common endpoint of the two rays is called the vertex of the angle. Angle...
Brian McLogan
Finding the circumference and area of a circle
👉 Learn how to find the area and perimeter of a parallelogram. A parallelogram is a quadrilateral with two pairs of parallel sides. The area of a shape is the measure of the portion enclosed by the shape while the perimeter of a shape is...
Brian McLogan
What are the important formulas for a circle
👉 Learn how to find the area and perimeter of a parallelogram. A parallelogram is a quadrilateral with two pairs of parallel sides. The area of a shape is the measure of the portion enclosed by the shape while the perimeter of a shape is...
Brian McLogan
What is the equation for a circle
Learn how to write the equation of a circle. A circle is a closed shape such that all points are equidistance (equal distance) from a fixed point. The fixed point is called the center of the circle while the distance between any point of...
Brian McLogan
Learn how to write the equation of a circle given a point and the center
Learn how to write the equation of a circle. A circle is a closed shape such that all points are equidistance (equal distance) from a fixed point. The fixed point is called the center of the circle while the distance between any point of...
Brian McLogan
How to write the equation of a circle given a circle on a graph
Learn how to write the equation of a circle. A circle is a closed shape such that all points are equidistance (equal distance) from a fixed point. The fixed point is called the center of the circle while the distance between any point of...
Brian McLogan
What are acute and obtuse angles
👉 Learn about angles in trigonometry. An angle is the figure formed by two rays sharing the same endpoint. The two rays are called the sides of the angle while the common endpoint of the two rays is called the vertex of the angle. Angle...
TMW Media
Circles And Circular Figures: Calculating the circumference of a circle
Given the diameter or the radius of a circle, what is its circumference? Circles And Circular Figures, Part 2
Brian McLogan
A negative angle larger than one revolution to find the quadrant of the terminal side
👉 Learn how to determine the quadrant of an angle given in radians. Recall that 1 radian is the distance on the circumference of the circle that is equivalent to the radius of the circle. Also, recall that the circumference of a circle...
Curated Video
Finding the Area of a Circle Using Circumference
In this video, the teacher explains how to find the area of a circle using the circumference. They review the formulas for the area and circumference of a circle and highlight a common mistake in calculating the radius.
Flipping Physics
Defining Pi for Physics
Pi is defined as the ratio of the circumference of a circle to its diameter. A frisbee is used to show the definition of pi. The units for pi, radians, are discussed. The conversion factor between revolutions, degrees, and radians is...
Brian McLogan
What is the arc length of a sector and how do you find it
👉 Learn about angles in trigonometry. An angle is the figure formed by two rays sharing the same endpoint. The two rays are called the sides of the angle while the common endpoint of the two rays is called the vertex of the angle. Angle...