Question

A ladder is placed in such a way the foot 15m away from the wall and it's to preaches a
window 20m above the ground. Then what is the
length of the ladder?

PLEASE EXPLAIN THE ANSWER​

Answer 1

★ Solution :-

Firstly refer the attachment

Given that ,

• The ladder reaches a window
• Length between ladder and foot of the wall = 15m
• Height of wall = 20m

It forms a right ∆ , with base 15m & height 20 m

Now , finding length of ladder

Using , Pythagoras theorem

Hypotenuse² = Base² + Height²

Where ,

• Hypotenuse = ladder
• Height = Wall
• Base = land

→ length of ladder = √15² + 20²

→ length of ladder = √225 + 400

→ Length of ladder = √625

→ length of ladder = 25m

Hence , length of ladder = 25m