Trees that are cut down and stripped of their branches for timber are approximately cylindrical. A timber company specializes in a certain type
of tree that has a typical diameter of 50 cm and a typical height of about
10 meters. The density of the wood is 380 kilograms per cubic meter, and
the wood can be sold by mass at a rate of $4.75 per kilogram. Determine
and state the minimum number of whole trees that must be sold to raise
at least $75,000.*