math
posted by jessica .
why it is not possible for a right triangle to have the following three sides: 12 feet, 18 feet, and 14 feet.
I need help because I am confuse. Thanks in advance.

It is possible to have a triangle with those side lengths, but it would not be a RIGHT triangle, because the Pythagorean theorem is not obeyed.
12^2 + 14^2 does NOT = 18^2
The hypotenuse (longest side) would have to be sqrt340 = 18.439