Question

a ladder is placed against a window of a building. the window is 20 feet from the ground and the foot of the ladder is 15 feet away from the bottom of the building. what is the length of the ladder ​

Answer 1

HEY FRIENDS

According to the question ,

perpendicular(height) = 20 feet

base = 15 feet

and this is forming a right angled triangle

so, hypotenuse = ?

according to pythagoras theorem

(perpendicular)^2 + ( base )^2 = ( hypotenuse )^2

(20)^2 + (15 )^2 = h^2

h^2 = 400 + 225

h^2 = 625

h = 25 feet

Answer 2

perpendicular=20 feet

base= 15 feet

hypotenuse =?

by using pytbahorus theorem

perpendicular × perpendicular + base×base =hypotenuse × hypotenuse

h ×h =20×20+15×15

h×h =400+225

h×h =625

h=25 feet