Question

A 25 CM ladder is against a vertical wall of a building the first foot of the ladder is 7 m from the base of the building if the top leader slip 4 m then the foot of leader will slide

Answer 1

Answer:

im not sure im very sorry i only answered this because i need to continue my streak :)

Step-by-step explanation:

Answer 2

The ladder forms a right angled triangle with the wall and the base with length of the ladder being the length of hypotenuse of this triangle.

Hypotenuse =25 m

Base =7 m

Height =25  

2

−7  

2

=24 m  

Now the ladder slides. In the new position, the hypotenuse of the new right angled triangle will be the same.  

The top slides down by a distance 4m. Hence, the height is 24−4=20 m. Let the base slide by a distance x. Therefore, hypotenuse =25 m

Base =(7+x) m

Height =20 m

By Pythagoras Theorem, we get

25  2 −20  2  =(7+x)  2

 

∴(7+x)=15

Hence, x=8

The correct answer is Option B.