Question

please explain the answer with properties​

Answer 1

Step-by-step explanation:

we know that window is perpendicular to base therefore using ladder makes a right angled triangle with it

hypotenuse = 25m

perpendicular distance = 20m

base = ?

using Pythagoras theorem

hypotenuse ²= base²+perpendicular ²

25² = base²+ 20²

625= base ²+ 400

625-400 = base²

base = √225

base = 15cm

hence the distance of the foot of the ladder from the building is 15m