Circles Lesson 3 - Circumference and Arc Length

Dive into a comprehensive 27-minute video lesson on circumference and arc length in circles. Learn the fundamental formulas for calculating circumference and arc length, and understand their applications through numerous sample problems. Master concepts like finding the radius given arc length, determining circumference from various inputs, and calculating arc measures. Practice with a wide range of questions covering circumference, arc length, diameter, and radius calculations for circles and semicircles. Enhance your geometry skills with step-by-step explanations and problem-solving techniques, making this video an essential resource for students and teachers alike.

Formula for circumference of a circle .
Definition of circumference.
Formula for circumference involving radius explained.
Sample problem-find the circumference of a circle.
Arc length formula explained.
Sample problem-finding the arc length of a circle.
Sample problem-finding the arc length of a circle when given the diameter and the central angle.
Sample problem-find the radius of a circle given the arc length.
Answer to sample problem 5 Find the radius of OP.
Sample problem 6 Find the circumference of the circle.
Qurstion 7 Find the measure of arc AB.
Question 8 Find the diameter.
Question 9 Find the length of arc AB.
Question 11 Find length of arc AB.
Question 12 Length of semicircle .
Questions 13,14,15 16 Find the circumference of each circle.
Questions 17,18,19 Finding arc lengths.
Questions 20,21,22 Finding arc length,circumference,and radius.