Can someone help me with this?

Answer:
5 foot...cuz the ladder is 5 foot....
4 foot building wall...1 foot taller than the actual building.
hope this helps!! :)
Step-by-step explanation:
Distance of the bottom of the ladder from the bottom of the building is given by d
[tex]d = \sqrt{ {(5)}^{2} - {(4)}^{2} } = \sqrt{25 - 16} [/tex]
[tex]d = \sqrt{9} = 3[/tex]
Distance of the bottom of the ladder from the bottom of the building = 3ft