The following graph is called a circle graph or a pie
Chapter 2, Problem 2.2.21(choose chapter or problem)
The following graph is called a circle graph or a pie chart. The circle represents a whole, or in this case, 100%. This particular graph shows the number of minutes per day that people use email at work. Use this graph to answer Exercises 21 through 24.What percent of email users at work spend less than 15 minutes on email per day?
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer