Question

Raman wanted to paint the window grill of his house. So, he brought a 5 m long ladder and placed it in such a way that it just reaches the window and foot of the ladder was 3 m away from the base of the wall. if the ladder is moved 1.6 m towards the base of wall then the distance by which the ladder will slide upwards on the wall​

Answer 1

Answer:

Let AC be the ladder of length 5 m and BC =4 m be the height of the wall, which ladder is placed If the foot of the ladder is moved 1.6 m towards the walls,i.e., AD= 16m, then the ladder is slide upward ie., CE = x m.

In right angled ΔABC

AC2=AB2+BC2 [by pythagoras theorem]

⇒(5)2=(AB)2+(4)2

⇒AB2=25−16=9⇒AB=3m

∴DB+AB−AD=3−1.6=1.4m

Step-by-step explanation: