How many continents are in the Eastern Hemisphere?
O two
four
O five
seven

There are four of them, hope this helped! There is Europe, South America, North America, and Oceania!

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