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Question

What is the Length of the side AD in the given figure?


A

22 m

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B

25 m

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C

5 m

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D

3 m

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Solution

The correct option is C

5 m


ABC is a right - angled isosceles triangle.

The sides are in the ratio 1 : 1 : 2

Let the sides be x , x , 2 x

Here x = 2

The Length of AC = 2 x = 2×2 = 2 m

Hence, using Pythagoras theorem we can say :

AD = CD2+AC2

12+22 = 5 m


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