For perimeter you add up the two sides so 15 + 21 equals 36
Answer:
9.47
Step-by-step explanation:
Answer: 3/28 of the book.
Step-by-step explanation: you simply take the said fraction that they give you, and divide the whole thing by 8. An 8th of 6/7 is 3/28!
14 units, do 3.14•9 then divide by 2