Calculating Arc Length

Calculate each arc length. Express your answer in terms of π. If the measure of arc AB is 45° and the radius is 12 meters, what is the length of arc AB?

• 6π meters

• 4π meters

• 2π meters

• π meters

Calculate each arc length. Express your answer in terms of π. If the measure of arc CD is 120° and the radius is 15 centimeters, what is the length of arc CD?

• 10π cm

• 15π cm

• 20π cm

• 30π cm

Calculate each arc length. Express your answer in terms of π. If the measure of arc EF is 60° and the radius is 8 inches, what is the length of arc EF?

• 4π inches

• 8π inches

• 16π inches

• 2π inches

Calculate each arc length. Express your answer in terms of π. If the measure of arc GH is 30° and the radius is 6 meters, what is the length of arc GH?

• π meters

• 2π meters

• 3π meters

• 6π meters

Find the length of the arc to 2dp

• 31.42cm

• 15.71cm

• 282.74cm

• 23.56cm

Find the arc length of the bolded arc in the picture.

(write in terms of pi)

Mathematical Equivalence

ON

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 length of the bold arc.

• 61.3ft

• 20.4ft

• 7351.3ft

• 22,068ft

What is the length of arc BB'?

Calculate each arc length. Express your answer in terms of π. If the measure of arc IJ is 80° and the diameter is 10 centimeters, what is the length of arc IJ?

• 4π cm

• 8π cm

• 2π cm

• 4/3π cm