Question

a ladder 25m long reaches a window of a building 20m above the ground.Determine the distance of the foot of the ladder from the building.

Answer 1

Answer is in attached pic...

Use pythagoras therom..

#be brainly

Answer 2

Answer:

15 m

Step-by-step explanation:

Length of ladder = 25 m

A ladder reaches a window of a building 20 m above the ground.

Refer the attached figure

AB = 20

AC = 25

We are supposed to find  the distance of the foot of the ladder from the building i.e. BC

$Hypotenuse^2=Perpendicular^2+Base^2$

$AC^2=AB^2+BC^2$

$25^2=20^2+BC^2$

$\sqrt{25^2-20^2}=BC$

$15=BC$

Hence the distance of the foot of the ladder from the building is 15 m