The following table shows the number of different types of books in a library:
| Type of Book: | Fiction | Non-Fiction | Biographies | Poetry | Textbooks |
| Number: | 2500 | 1800 | 1200 | 900 | 1500 |
If a pie chart is constructed for the above data, what will be the angle (approx value) of the sector representing non-fiction books?
1
72°
2
82.08°
3
108°
4
144°