Pls..Help me Understand and to solve Phytogorean Theory
This website will help you understand Pythagorean Theory:
its called mathisfun
Im sure you've heard of it, and if you haven't just type mathisfun in your search engine.
in the search engine that comes up on that website, type: Pythagoras Theorem and click on the first one that's there. It will explain and show example of your problem. :)