People leaving the library were asked how many books they checked out that day. The results are: 0, 1, 2, 2, 2, 2, 2, 3, 4, 4, 5, 6, 8, 9, 9 Which histogram correctly shows the data set?

step-by-step explanation:

what is the question you are asking?

arc length = radius * x ( in radians)

6 * pi = 18 * x

divide by 18 on each side

6 pi / 18 = x

pi/3 = x

the angle is pi / 3 radians

or   60 degrees