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Question

What is the perimeter of the given figure ABCD ? ( Take 2 = 1.4 and 5 = 2.2 )


A

5 m

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B

6 m

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C

62 m

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D

6.8 m

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Solution

The correct option is B

6 m


ABC is a right - angled isosceles triangle.

The sides are in the ratio 1:1:2

Let the sides be x,x,2x

Here, x=2

The Length of AC = 2x

= 2×2 = 2 m

Hence, using Pythagoras theorem we can say:

AD = 12+22 = 5 m

Perimeter of the figure ABCD
= AB + BC + CD + AD

= 2+2+1+5

= 1.4 + 1.4 + 1 + 2.2

= 6 m


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