Question

15
cm and A
3. A 15 m long ladder reached a window 12 m high
from the ground on placing it against a wallata
distance a. Find the distance of the foot of the
ladder from the wall​

Answer 1

this answer is 30 steps

Answer 2

$\huge \bf \pink question$

A 15 m long ladder reached a window 12 m high

from the ground on placing it against a wallata

distance a. Find the distance of the foot of the

ladder from the wall

$\bf \star \bf answer$

Let AC be the ladder and A be the window.

• Given: ac=15m, ab=12m, cb=a

• In right angled triangle abc

$\bf {h}^{2} = {b}^{2} + {p}^{2}$

[By Pythagoras theorem]

${ac}^{2} = {ab}^{2} + {bc}^{2}$

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

$225 = 144 + {a}^{2} \\ \\ a = \sqrt{81} \\ \\ a = 9cm$

=

Thus, the distance of the foot of the ladder from the wall is 9m.