043: Finding Arc Length

Circle A has a radius of 8 cm. The measure of central angle CAB is 2.5 radians. What is the length of the intercepted arc CB?

• 20 cm

• 16.5 cm

• 8.5 cm

• 3.2 cm

Circle B has a radius of 1 unit and central angle  $\theta=1$  radian.  What is the length of the intercepted arc?

• 1

• 2

• 0

•  $\pi$  

Circle C has a diameter of 5 units and central angle  $\theta=\frac{\pi}{6}$  radians.  What is the length of the intercepted arc?

•  $\frac{5\pi}{12}$  

•  $\frac{5\pi}{6}$  

•  $\frac{5\pi}{3}$  

•  $\frac{\pi}{30}$  

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

• 7/4π
• 7/2π
• 1/8π
• 45π

Tags

CCSS.HSF.TF.A.1

CCSS.HSG.C.B.5

Find the length of the bold arc.Leave pi in your answer.

• 5688π ft
• 15.8π ft
• 150.4π ft
• 54,150 ft

Tags

CCSS.HSG.C.B.5

Find the arc length of the bolded arc. Give your answer in terms of π.

• (65/12)π cm

• 17.02 cm

• (845/24)π cm

• 26π cm

A ____ angle is an angle whose vertex is a the center of a circle.

• supplementary
• complimentary
• central
• obtuse

Tags

CCSS.HSG.C.A.2

Convert 3π/4 to degrees

• 147.3°
• 135°
• 125°
• 173.8°

Convert 330⁰ to radians

• 11π/6
• 11π/3
• 11π/9
• 7π/6

What is 45 degrees in radians?

• π/2
• π/6
• π/4
• 3π/4