Which does not affect the amount of destruction caused by earthquake vibrations? a) the material with which structures are built b) the design of the areas structures c) the weather on the day of an earthquake d) the intensity and duration of the vibrations

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