Given Let the length of the ladder be L m.
By using the Pythagoras theorem, we can find the length of the ladder.
62 + 82 = L2
L2 = 36 + 64 =100
L = 10
Thus, the length of the ladder is 10 m.
When ladder is shifted,
Let the height of the ladder after it is shifted be H m.
By using the Pythagoras theorem, we can find the height of the ladder after it is shifted.
82 + H2 = 102
H2 = 100 – 64 = 36
H = 6
Thus, the height of the ladder is 6 m.