A ladder is 6 m long.
The ladder is placed on horizontal ground, resting against a vertical wall.
The instructions for using the ladder say that the bottom of the ladder must not be closer than 1.5 m
from the bottom of the wall.
How far up the wall can the ladder reach?

A ladder is 6 m long The ladder is placed on horizontal ground resting against a vertical wall The instructions for using the ladder say that the bottom of the class=