{{ item.displayTitle }}
navigate_next
No history yet!
Progress & Statistics equalizer Progress expand_more
Student
navigate_next
Teacher
navigate_next
{{ filterOption.label }}
{{ item.displayTitle }}
{{ item.subject.displayTitle }}
arrow_forward
{{ searchError }}
search
{{ courseTrack.displayTitle }}
{{ printedBook.courseTrack.name }} {{ printedBook.name }}

Rule

# Relationship between Arc Length and Arc Measure

In a circle, the ratio between an arc length and the circumference is equal to the ratio between the arc measure and the circle's angle,

### Rule

Find the arc length

This relationship can be used to calculate the length or measure of an arc.

The arc length between and can be measured using the relationship between the arc length and arc measure. The arc measure is known, and with the radius, in., the circumference can be calculated. The circumference is given by the formula Therefore, the circumference is: The values for the arc measure and the circumference are now used to find the arc length.
Solve for
Th arc length can be calculated to units.