Question

hey guys I am new here and my real name is AHANA and this is my first question
PLS HELP
request to all

question - a 15 m long ladder reaches a window 12 m high from the ground on placing it against a wall . how far is the foot of ladder from the wall

again a humble request to all pls help

Answer 1

Answer:

9

Step-by-step explanation:

By Pythagoros Theorum,

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

$15^{2}$=$12^{2}$+$BC^{2}$

$BC^{2}$ =225-144

      =81

BC = 9