Right angle because that has 90 degree angle
Answer: 42.39
Step-by-step explanation:
3.14×13.5
2b+15
2 dollars for each book so you multiply it by the number of books and add 15 because it is a one time fee.
Answer:
52.5
Step-by-step explanation:
=50+50×5%
=50+2.5
=52.5