Question

A 15 m long ladder is placed against a wall to reach a window 12m gh. Find the distance of the foot ladder from the wall

Answer 1

let the arrangement be a right angled triangle in which ladder is the hypotenuse=15m
height of window is the altitude =12 m
and we are required to calculate the distance of the foot from wall which is the base of the triangle

so A/Pythagoras theorem.

b=√(h^2-a^)
so, b=√(15^2-12^2)=9 m ans.

Thanks

Answer 2

Heya ☺

Let the the given condition be in the form of a right - angled triangle. Then,

By Pythagoreous theorem

H = 15 m

P = 12 m

B = ?

H^2 = P^2 + B^2

=> (15)^2 = (12)^2 + B^2

=> 225 = 144 + B^2

=> 225 - 144 = B^2

=> 81 = B^2

=> B = √81

=> B = 9 m

Hence , the distance of the foot ladder from the wall is 9 m.




Thanks