Both circles middles are positive
The frequency of the second class is 6.
Since the class width is 6 and the lower limit of the first class is 50, this means the first class goes from 50-55. This would put the second class at 56-61. There are 6 data points in this set that would go in the second class.
Answer: x=7.5
Step-by-step explanation:
P=r x 2 x pi
= 3 x 2 x 3.14
= 6 x 3.14 = 18.84