An emerging technology for treating wastewater while producing biofuel for energy production utilizes microalgae to remove nutrients such as nitrogen and phosphorus from the water and increase the dissolved oxygen to assist other microbes in digesting contaminants. If an algae bioreactor produces 1.2 kg of biomass per day, and the biomass has an average density of 0.5 g/ cm, what volume of container would be needed to store this material for a week at a time? cm