please can you answer this question

4. The population of Country Y is about 80 million. Country Y sends about 72 million US tons of MSW to its landfills every year. Estimate the required landfill area for one year's worth of MSW if landfill density is 1000 lb/yd?, cell depth is 11 ft (one lift per year), and 19% of the cell volume is occupied by soil daily cover. What is the area in acres/yr per 1000 people? Note: 1 US ton = 2,000 lb, 1 acre = 43,560 ft-. 5. Suppose a small town generates 60000 US tons of MSW annually. At current recovery and recycling rates, 22 percent of that is recovered and the rest goes to a landfill. The landfill density is 1,200lb/yd?, maximum cell depth is 8 ft and the required cover-to- waste ratio is 1:4 by volume. (i) what lift area (in acre) would be required per year if single lift is used? (ii) If the current landfill site covers 20 acres, including 4 acres needed for weight stations, offices, access roads and auxiliary facilities, and a total of ten lifts are envisioned, what is the expected operation life of this landfill (in yrs)? Note: 1 US ton = 2000 lb; 1 acre = 43560 ft