Windows Plus has been hired to clean the windows at a local office building. The window of greatest height is 24 ft. If the apprentice uses a 25 ft ladder, how far from the building is the foot of the ladder?




5 ft.

13 ft.

7 ft.

11 ft.

Respuesta :

Using the pythagorean theorem, we can find the length of x, or the length of the foot of the ladder from the building.
24^2 + x^2 = 25^2
576 + x^2 = 625
subtract 576 from both sides
x^2 = 49
square root both sides
x = 7