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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?

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surely you are familiar with the 5-12-13 Pythagorean triple?

The length of the ladder is √(5^2+12^2) = 13

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