Question

A 15 m long ladder reached a window 12 m 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.

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

9m (distance A)

Step-by-step explanation:

since length of ladder is 15m

therefore hypotenuse=15m

Now height is 12m

So according to Pythagoras theorem

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

therefore, 225-144=a^2

so 81 =a^2

√81=a

9m =a