A cement truck pours cement into a container in the shape of a cylinder with a radius of 4 feet. The height, h, of the cement in the
container increases at a rate of approximately 10 inches per
minute. Write an equation that models the volume, V, of the
cement in the container in terms of h, then use the equation to
determine the time at which the volume is 8070 cubic feet.
Note that the volume of a cylinder is V = arah, where r and h
are the radius and height of the cylinder. (4 points)