Question

A ladder 5 m long when we set against the wall of a house , just reaches window at a height of 4m. how far is the foot of the ladder from the wall.​

Answer 1

Answer:

Your answer is in attachment hope it helps you ..

Step-by-step explanation:

Answer 2

Step-by-step explanation:

by Pythagoras :

${ac}^{2} = {ab}^{2} + {bc}^{2} \\ {5}^{2} = {4}^{2} + {bc}^{2} \\ 25 = 16 + {bc}^{2} \\ 25 - 16 = {bc}^{2} \\ 9 = {bc}^{2} \\ on \: taking \: square \: root \: on \: both \: side \: we \: get \: \\ bc = 3$