What percentage of the data values are between 16 and 72

Acircular hot tub located near the middle of a rectangular patio has a diameter of 48 inches. the patio measures 11 feet by 6 feet. what is the area of the patio that is not covered by the hot tub?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|