The inch is the smallest unit of length. a foot is equal to 12 inches. The yard is the next longest. The mile is the longest measure.
Answer:
29 degrees
Step-by-step explanation:
Both angles are the same.
So each book is an average of 2.8 cm
so 120 divided by each book=number of books
120/2.8=42.85
round down since you can't fit .85 of a book on a shelf
the answer is 42 books
