V=length times width times height wait, we need it in yards 3ft=1yard so height=1
v=45 times 30 times 1 v=1350 cubic yards 1 cubic yard=201.974 gallons so times both sides by 1350 272664.9 gallons per every 5000 gallons of water we have 1 of chlorine so 272664.9/5000=54.53298 so we need about 54.5 gallons or 55 gallons of cholrine
