Podcast
Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App
Questions and Answers
What is the formula for finding the circumference of a circle?
What is the formula for finding the circumference of a circle?
- 2 * π * r (correct)
- 2 * π / r
- 2 * r
- π * r^2
What is the relationship between the diameter and the radius of a circle?
What is the relationship between the diameter and the radius of a circle?
- The diameter is half the length of the radius
- The diameter is the same as the radius
- The diameter is three times the length of the radius
- The diameter is twice the length of the radius (correct)
What is the area of a circle with radius 'r'?
What is the area of a circle with radius 'r'?
- 2 * r
- 2 * π * r
- π * r^2 (correct)
- r^2
Flashcards are hidden until you start studying
Study Notes
Circle Formulas
- The formula for finding the circumference of a circle is C = 2Ï€r, where C is the circumference and r is the radius.
- The diameter of a circle is equal to twice the radius, represented as d = 2r.
- The area of a circle with radius 'r' is A = πr², where A is the area.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
