4.2 Intro to Radians and Degrees

How many radians does a circle have?

•   360 degrees
• 2pi radians
• pi radians
• ^{2 radians}

Convert π radians to degrees.

• 90⁰
• 180⁰
• 360⁰
• 60⁰

Convert 150⁰ to radians

• 5π/6
• 3π/4
• 7π/6
• 2π/3

Convert the following to radians:   
720⁰

• 3π
• 4π
• 5π

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

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

Find the circumference (to the nearest whole number)

• 88 in
• 44 in
• 116 in
• None of the above

What is the arc length of minor arc AB?

• 5.23
• 103
• 33.33
• 50

What is the distance around a circle?

• Circumference
• Area
• Diameter
• Radius

12 inches in this circle represents its

• radius

• diameter

14cm in the circle represents its

• radius

• diameter