Question

A ladder is placed with its foot 5m from the bottom of a wall 12m high. The top of the ladder just

reaches the top of the wall. Find the length of the ladder 5
(3 Points)
14m
13m
169m
15m

Answer 1

13 m

Explanation:

The ladder forms a right triangle with the wall that has legs of 5 and 12. We need to solve for the length of the ladder, which in this case, is the hypotenuse of the right triangle. You could use the Pythagorean Theorem but there's an easier way to do this. We can use the 5 - 12 - 13 Pythagorean triple so we know that the length of the ladder is 13 m.