Mathematics and Society - OS X Lion Server

~ EEB""'-'~~wlci~X~;l\~J;;~i;lf,ki.;;i;;i:£i!JfjiP/l( I\\\~Here is how land in the United States is used.MillionsPercentUse of hectares of totalCrops 155Cities,transportation22Parks 251) Find the percent of thetotal for each use.2) Make a circle graph forthe information.Pasture 244Grazing land notin farms116Forests 213Other (desert,swamps, 140mountains)Total 915Data from Statistical Abstract of the United States 19752A hectare is 10,000 m3) Which kinds of land do you use?4) Suppose everyone had the same amount of land. How many hectares would you have tothe nearest .1 ha?kind of land would you pick?5) U.S. land is worth $715 billion dollarsmuch is a hectare of land worth?your share in exercise 4 be worth?(Assume there are 215 million Americans.)What(in 1968 dollars). On the average, howOn the average how much would6) Interstate highways use about 10 ha of land per km of highway. There are. ~bout68,500 km of interstate highway. About how much land does the interstate highwaysystem take?find the value of this land.Using the average value per hectare from exercise 5,7) It takes about .5 ha to grow the crops to feed the average American. How manypeople can be fed from the U.S. cropland?the surplus?What happens to231