Introduction to Circles Answers

Use the formula for radian measure to calculate the measure of a central angle in a circle having a radius of 12 cm and intercepting an arc of 21 cm.The angle has a measure of radians.

Use the circle.What is the radian measure for the angle to the nearest hundredth? Use 3.14 for .

Given a radius of 9 inches, estimate the length of arc s to the nearest hundredth. inches

Convert 1 radian to degrees. Round your answer to the nearest degree. °

Convert radians to degrees. °

Convert –18° to radians.

What is the equivalent radian measure of 540°?

How many degrees has the Ferris wheel rotated?

What is the radian equivalent for 180°?

To the nearest foot, what is the radius of the Ferris wheel if you traveled 157 feet? feet