what is the area of the polygon? ( 3, 12, 5, 6, ).

To find the area of a polygon, we need the coordinates of the vertices. Since we only have the side lengths of the polygon given (3, 12, 5, 6), we cannot calculate the area without knowing the shape of the polygon and the angles between the sides.

If you could provide more information about the polygon, such as the type of polygon (e.g. triangle, quadrilateral) and the angles between the sides, we would be able to calculate the area for you.