Question

A ladder 25 m long reaches a window of a building 20 m above the ground find the distance of the foot of the ladder from the building...... And for class 7​

Answer 1

Easy .. 5 meters ...

Answer 2

Answer:

15 m

Step-by-step explanation:

According to the figure we can find the 3rd side by pythagoras theorem,

(Hypotenuse)^2= (Base)^2 + (Perpendicular)^2

(25)^2= (Base)^2 + (20)^2

625= (Base)^2 + 400

625- 400= (Base)^2

225= (Base)^2

Base= 15 m (square root of 225 is 15)

Therefore the distance between the foot of the ladder and the building is 15 m

Hope this helps