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In a rectangle, if the angle between a d...

In a rectangle, if the angle between a diagonal and a side is `30^(@)`, and the length of the diagonal is 6 cm, the area of the rectangle is

A

`18 cm^2`

B

`9 cm^2`

C

`18 sqrt 3 cm^2`

D

`9 sqrt 3 cm^2`

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