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Question

The length of AD in the given figure ABCD is.
( Take 2 = 1.4 and 5 = 2.2)


A
7 m
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B
5 m
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C
3 m
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Solution

The correct option is B 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 = 2x

= 2×2 = 2 m

Hence, using Pythagoras theorem we can say:

AD = 12+22 = 5 m


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