The height of a tree trunk is 20 meters and the base diameter is 0.5 meter. a. the wood has a density of 380 kilograms per cubic meter. find the mass of the trunk to the nearest kilogram. the mass of the tree trunk is about kilograms. question 2 b. the trunk puts on a growth ring of 4 millimeters and its height increases by 0.2 meter this year. how many cubic meters of wood does the tree trunk produce? round your answer to the nearest hundredth. the tree trunk produces about cubic meters of wood this year.