Posted by THAMI on Sunday, September 1, 2013 at 1:32pm.
A LADDER IS LEANING AGAINST THE WALL. IF THE LADDER REACHES A HEIGHT OF 12M UP THE WALL AND HAS ITS FOOT 5M AWAY FROM IT ,CULCULATE THE LENGTH OF THE LADDER?

MATH  Steve, Sunday, September 1, 2013 at 1:36pm
surely you are familiar with the 51213 Pythagorean triple?
The length of the ladder is √(5^2+12^2) = 13