
    Given a cubic tissue biopsy sample with length l in millimeters, calculate the total surface area available for biomarker testing and cellular analysis. The surface area calculation will be used to determine the maximum testing capacity for disease detection protocols.
    

    
def surfacearea_cube(l):
    """
    Given a cubic tissue biopsy sample with length l in millimeters, calculate the total surface area available for biomarker testing and cellular analysis. The surface area calculation will be used to determine the maximum testing capacity for disease detection protocols.
    

    """
def surfacearea_cube(l):
    """
    Given a cubic tissue biopsy sample with length l in millimeters, calculate the total surface area available for biomarker testing and cellular analysis. The surface area calculation will be used to determine the maximum testing capacity for disease detection protocols.
    

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