Will give brainliest Question on picture

Orthodox (also known as christian)

Explanation:

Russia has over 5000 orthodox churches and 71% of russia is of orthodox religion. Vladimir the great had an impact on russia and had taken part in the reason why russia is now mainly orthodox. He said that if russia had one main religion that the people of russia could be unified. So that is one reason russia is mainly of orthodox religion.

(have a great day)

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