A ladder of 85 m length is resting against a wall. If it slips 7 m down the wall, then how far is the bottom from

Question

the wall if it was initially 40 m away from it.

Answer 1

initially, the height h was

40^2+h^2 = 85^2
h = 75
Now, after sliding down, we have

x^2 + 68^2 = 85^2
x = 51