Answer:
C
B
A
Explanation:
Agriculture first became common practice ~10,000 years ago.
People started to domesticate plants and animals a short time after.
The earliest settlements were roughly around the same time as Agriculture, sometimes even before?
Wording is confusing.

The formula is above, so if you plug it in it should be 34 squared times 27.
24 squared is 1156. Multiply 1156 by 27 and you have 31212. If you have to solve it with 3.14, just multiply that by 3.14 (Would take too long for me).
Answer:A ruler should exercise power virtuously for the common good of his people/A good ruler should do whatever it takes to secure and unite his state.
Explanation: