Don't have a VideoClass account yet?
or log in with
Professions and Applied Sciences
Formulas for Pi
How many formulas for Pi can I explain in six minutes?
Please log in to post comments.
Area of a circle
Using circumference to find a circle's area. Know the formulas for the area and circumference of a circle and use them to solve problems; give an informal derivation of the relationship between the circumference and area of a circle.
An intro to circles, radii, diameters, and chords
Circumference and Pi
Find the distance around a circle (and then eat some pi)
Size of the Earth
Use shadows to measure the Earth's circumference!
Inscribing the diameter
Prove that inscribed angles drawn to diameters are right
Enter access code
You can access this video by entering a special code.