Question

a ladder is placed with its foot 5m from the bottom of a 12m high.the top of the ladder just reaches the top of the wall.find the length of the ladder​

Answer 1

Answer:

We have,

Let the length of ladder=x m

Now, distance between foot of ladder and wall=5m

Height of the window from to ground=12m

∴ By using the hypotenuse theorem

∴x

2

=(12)

2

+(5)

2

x=

144+25

x=

169

x=13

Length of the ladder is 3m

Hence, this is answer.

solution

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Answer 2

Step-by-step explanation:

Answer: The length of ladder is 13 m

We should use the Pythagoras theorem for this.

The length of the ladder will be the hypotenuse of the right angled triangle and let it be AB.

So, in triangle ABC,

AB^2 = BC^2 + AC^2

AB^2 = 5^2 + 12^2

AB^2 = 25 + 144

AB = ✓169 = 13