Question

A 15m long ladder reached a window 12m high from the ground on placing it against a wall at a distance 'a'. Find the distance of the foot of the ladder from the wall.


Please Right in step by step​

Answer 1

Answer:

The distance between the foot of the ladder and the wall is 9 m.

Step-by-step explanation:

Let x be the distance to be found.

⇒a² + b² = c²

⇒12² + x² = 15²

⇒x² = 15² - 12²

⇒x² = 81

⇒x = √81

⇒x = 9m

Answer 2

The distance between the ladder and the foot will be 9m

Let the required distance be x

Acc to Pythagoras Theorum

(15)^2 = (12)^2 + x^2

225 = 144 + x^2

225 - 144 = x^2

x^2 = 81

x = 9

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