
    Design a function to calculate the total displayable area of a 3D social feed cube widget, where each face shows different content categories and the length of each edge is l units. The total surface area will determine how many recommended posts can be shown simultaneously across all faces of the interactive content cube.
    

    
def surfacearea_cube(l):
    """
    Design a function to calculate the total displayable area of a 3D social feed cube widget, where each face shows different content categories and the length of each edge is l units. The total surface area will determine how many recommended posts can be shown simultaneously across all faces of the interactive content cube.
    

    """
def surfacearea_cube(l):
    """
    Design a function to calculate the total displayable area of a 3D social feed cube widget, where each face shows different content categories and the length of each edge is l units. The total surface area will determine how many recommended posts can be shown simultaneously across all faces of the interactive content cube.
    

    """
    surfacearea = 6 * l * l
    return surfacearea