In the United States, water used for irrigation is measured in acre-feet. An acre-foot of water covers an acre to a depth of exactly 1 ft. An acre is 4840 yd2. An acre-foot is enough water to supply two typical households for 1.00 yr.
(a) If desalinated water costs $1950 per acre-foot, how much does desalinated water cost per liter?
(b) How much would it cost one household per day if it were the only source of water?