Posted by THAMI on Sunday, September 1, 2013 at 2:09pm.
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  Serena, Sunday, September 1, 2013 at 2:15pm
So for this you would use the Pythagorean Theorm.
The formula is a^2 + b^2 = c^2, where c is the hypotenuse of the triangle.
So if you know that the ladder reaches the height of 12m, that would be the hypotenuse in the triangle. 5m would be one of the legs in the triangle.
Therefore, calculate 5m^2 + ?^2 = 12m^2.

MATH  Steve, Sunday, September 1, 2013 at 7:07pm
actually, 12 is one of the legs. The ladder is the hypotenuse. Make a diagram to see why.
Think 51213 Pythagorean triple
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