Question

An old man was trying to place a ladder 13m long in such a way it reaches a window of the building 12m above the ground Anoop decided to help the old man . He placed the foot of the ladder at such a distance from the wall that the top of the ladder reaches the window. Find the distance of foot of the ladder from the wall

Answer 1

Is it a right answer....

Answer 2

Answer:

Step-by-step explanation:

When a ladder is placed on the wall, a right angled triangle is formed.

The ladder is the hypotenuse.

The wall is the height.

The horizontal distance between the foot of the ladder and the wall is the base.

According to pythagorean theorem :

Let :

a = height.

b = base

c = hypotenuse

Now :

a^2 + b^2 = c^2

In our case :

a = 12

c = 13

Now :

12^2 + b^2 = 13^2

144 + b^2 = 169

b^2 = 169 - 144

b^2 = 25

b = 5 m