Question

How long is the arc subtended by an angle of 9π/5 radians on a circle of radius 30 cm?

Answer 1

A)
9π



B)
27π
Eliminate


C)
54π



D)
108π

Answer 2

forget the eliminate thing

Answer 3

arc length = radius * (central angle in radians)
arc length = 30 * 9/5 * PI
169.6460032938 cm
Here's a calculator to check your work:
http://www.1728.org/radians.htm

Answer 4

Oh and the multiple choice answer is C) 54 PI

Answer 5

Thank you!!