CSEC Mathematics · May/June 2011 · Paper 1 · Question Q60

A ladder 5\text{ metres} long is leaning against a vertical wall. The foot of the ladder is 3\text{ m} away from the wall on horizontal ground. How far up the wall does the ladder reach?

1. (A)4\text{ m}
2. (B)6\text{ m}
3. (C)8\text{ m}
4. (D)15\text{ m}