A piece of paper is in the shape of a sq...

A piece of paper is in the shape of a square of side 1 m long. It is cut at the four corners to make a regular polygon of eight sides (octagon), then the area of the polygon is

A

`2(sqrt2 - 1)m^(2)`

B

`(sqrt2 - 1)m^(2)`

C

`1/sqrt2 m^(2)`

D

none of these

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The correct Answer is:

a

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