Look at the map of europe after world war i
russia
poland
1 yugoslavia
communist nations
what countries' names should appear in the blank areas?
france: great britain
germany: the soviet union
west germany: east germany
germany; italy

20: 5

explanation:

about 20% of the world's population lives in   southwest asia, but on less than 5% of the world's   land area.

the answer would be the third option, "no, ariel should have added 9^2 and 12^2 and compared that to 15^2."

this is found through the pythagorean theorem, which is a^2 + b^2 = c^2.

this is the correct way of solving the problem:

9^2 + 12^2 = 15^2

81 + 144 = 225

225 = 225