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If center of a regular hexagon is at the...

If center of a regular hexagon is at the origin and one of the vertices on the Argand diagram is `1+2i` , then its perimeter is `2sqrt(5)` b. `6sqrt(2)` c. `4sqrt(5)` d. `6sqrt(5)`

A

`2sqrt(5)`

B

`6sqrt(2)`

C

`4sqrt(5)`

D

`6sqrt(5)`

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