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A wire of length 20m is to be cut into t...

A wire of length 20m is to be cut into two pieces. One of the pieces is to be made into a square and the other into a regular hexagon. Then the length of the side ( in meters) of the hexagon, so that the combined area of the square and the hexagon is minimum is

A

`(10)/(3+2sqrt(3))`

B

`(5)/(2+sqrt(3))`

C

`(10)/(2+3sqrt(3))`

D

`(5)/(3+sqrt(3))`

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