Arc Length Measurement

FIND THE ARC LENGTH OF THE BOLDED ARC

• A

• B

• C

• D

In circle O, the radius is 4, and the measure of minor arc AB is 120 degrees. Find the length of minor arc AB to the nearest integer.

• 5

• 9

• 8

• 6

Find the arc length.  Leave your answer in terms of π.

• 7/4π

• 7/2π

• 1/8π

• 45π

When she is outdoors, Tasha, the dog, is tied to a stake in the center of a circular area of radius 24 feet. The angle between her dog house and her favorite hydrant is 165 degrees.  What is the length of the arc from her dog house to the hydrant, following minor arc DG, to the nearest foot.

• 40

• 35

• 55

• 69

Solve for the arc length in the circle shown.

Mathematical Equivalence

ON

FIND THE ARC LENGTH OF THE BOLDED ARC

• A

• B

• C

• D

Alison is jogging on a circular track that has a radius of 140 feet.  She runs along the track from point R to point N, a distance of 230 feet. Find to the nearest degree, the measure of minor arc RN.

• 47

• 74

• 94

• 123

What are the units when finding LENGTH of an arc?

• degrees

• feet, inches, meters, etc...

Find the arc length of the bolded arc.

• A

• B

• C

• D

In circle O, the radius is 4, and the length of minor arc AB is 4.2 feet.  Find the measure of minor arc AB to the nearest degree.

• 90

• 60

• 55

• 113