Question

Find the height of a wall,if a ladder 10m long placed along the wall and it's foot is 2m away from the wall

Answer 1

Here in this problem assume a right angled trianle formed by wall(one side of triangle) and surface of earth(base of triangle) and ladder(as hypoteneous).

Given ladder is 10 m long i.e., its hypoteneous will be 10m long.

it's foot is 2m away from the wall i.e, base is 2m long.

On using pythogorous theorem we get 10²=2²+x²

from this we get x²=96 i.e., x=4√6 or 2√24 or √96 which is height of wall