A.)  IN THE FIRST PROBLEM,, the students will calculate how much land should be set aside for a new city
    landfill designed to accommodate 10 years of residential waste.

B.)  1. weight= (6.5 x 10(4) persons) (2 x 10(3) lb/ft(3) lb/person/yr) (10 yrs.)
       2. dentsity = 1500 lb/yd(3) or about 55.5 lb/ft(3)
       3.  13 x 10(8) lb. =4.7 x 10(5)ft.(2)
            55.5lb./ft.(3) x50 ft.
      4.  area (in acres) = 4.7 x 10(5)ft.(3) = 10.8A
                                    43,560ft.(3)/A

C.  Over ten years, the area of a fifty-foot-deep landfill would be 11 arces.  Considering space for
 roads and fences, 15 acres should be allowed.

II. IN THE SECOND PROBLEM, students compute the size of landfill needed to accommodate 15 years
    of residential waste.
    A.)  The amount of waste in the year 15 will double that in year one.  The average will be 1.5 that of year one.
        Thus, the area will be 1.5 that of year one times 15 years.

    B.)  In year one, approximately 1 arce was needed, so over 15 years:
            area (A) = 3/2 x 1 acre x 15 yrs. = 22.5 acres (A),
                                       year
            plus the area for roads and fences, or about 30A.

III.  GIVE EACH STUDENT A COPY OF THE STUDENT SHEET "WASTE PRODUCED BY YOUR FAMILY."

A.)  Determine how much waste your family produres in a week, in a month, in a year.
        (Assuming each family member creates approximately five pounds of waste per day.)
      Vary the amounts of garbage per person according to age.

B.)  You have computed the pounds of waste produced by your family in one year.
        Now compute the area of land in a landfill that your family will use in one year.