Question

Question 3:
A 15 m long ladder reached a window 12 m high from the ground on placing it against a
wall at a distance a. Find the distance of the foot of the ladder from the wall.
15 m
12 m
ol​

Answer 1

Answer:

9 M is answer

Step-by-step explanation:

Height of wall till window = 12m

height of ladder = 15 m

ladder becomes hypotenuse and wall is perpendicular then 15× 15 -12×12=√81=9

Answer 2

Que. A 15 m long ladder reached a window 12 m high from the ground on placing it against a

wall at a distance a. Find the distance of the foot of the ladder from the wall.

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Sol'n let the base of the triangle be x

In the figure the hypotenuse is representing the ladder.

And the base is representing the distance between the foot of ladder and the foot of the building.(which we have to find).

Here, we will apply Pythagoras Theorem,

Hypotenuse ² = perpendicular ²+base²

→15²=12²+x²

→225-144=x²

→x²=81

→x=√81

→x=9m

distance between the foot of ladder and the foot of the building will be 9 metre.