In this series of videos, we will talk about geometric measures and will serve as a guide to areas and lengths related to circles.
Introduction to geometric measures: What is the circumference of a circle?
Question 1: Circumference of circles
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Using that , what is the circumference of a circle with radius feet?
The circumference of a circle is about feet.
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Example 1
Question 2: Not quite the circumference of circles
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What is half of the circumference of a circle with radius ? Half of the circumference of a circle with radius is exactly .
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Example 2
Arc Length: The length of the arc subtended by an angle
Question 3: Arc Length
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What is the arc length of an arc subtended by the angle for a circle with radius
meters?
The arc length is exactly .
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Example 3