Each cone of the hourglass has a height of 12 millimeters. The total height
of the sand within the top portion of the hourglass is 47 millimeters. The
radius of both the cylinder and cone is 4 millimeters. Sand drips from the
top of the hourglass to the bottom at a rate of 10T cubic millimeters per
second. How many seconds will it take until all of the sand has dripped to
the bottom of the hourglass? (4 points)