make sure you have version 2.50
try looking in the very back of the book : )
you can download it here
to get the area, multiply 360 by 160.(57,600)
to find out how many bags of fertilizer it will take, first figure out how many square feet one bag can hold. divide 1000 by 8(125) to get the unit rate(how many square feet one pound of fertilizer can hold)and multiply it by 50(6250). if i haven't made a mistake, that is the answer.
you'll just earn points here