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Question

Find the perimeter of triangle whose two sides are of length 122 m each. The length of the third side is equal to the length of diagonal of square of side 10m ?

A
34 m
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B
342 m
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C
44 m
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D
Cannot be determined.
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Solution

The correct option is B 342 m
Let, the diagonal of square be x.


Now, applying pythagoras theorem,
x=102+102
x=100+100
x=200
x=102m
Now, a triangle having one side as 102 m and two sides as 122 m each will have perimeter as,
Perimeter =122+122+102
Perimeter =342 m

Hence, option(b) correct.

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