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Arc Length and Sector Area Notes
Sectors A sector of a circle is a region bounded by two radii of the circle and their intercepted arc.
arc measure
360=
area of sector ABC
area of the whole circle
Example 1) Find the area of each sector a)
b)
Arc Length
Arc length is the distance along an arc measured in linear units.
arc measure
360=
arc length
circumference of the circle
Example 2) a) Use the given arc measure and radius to find the arc length of arc AB.
b) ) Use the given arc measure and radius to find the arc length of arc QR.
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