# Selina Solutions Class 9 Mathematics Solutions for Exercise 13(A) in Chapter 13 - Chapter 13- Pythagoras Theorem

Question 1 Exercise 13(A)

A ladder 13 m long rests against a vertical wall. If the foot of the ladder is 5m from the foot

of the wall, find the distance of the other end of the ladder from the ground.

Solution:

The pictorial representation of the given problem is given below,

Pythagoras theorem states that in a right-angled triangle, the square on the hypotenuse is equal to

the sum of the squares on the remaining two sides.

Here, AB is the hypotenuse. Therefore applying the Pythagoras theorem we get,

Therefore, the distance of the other end of the ladder from the ground is 12m

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