math
posted by Blayke on .
true or false. an aquarium which is 4 ft. x 5 ft. x 3 ft. high can hold 800 gallons of water. (assusme that one cubic foot of space hold 7.5 gallons of water.)

4 * 5 * 3 = 60 cubic feet
60 * 7.5 = 450 gallons 
well find the volume of the aquarium. V=l*w*d so volume=4ft*5ft*3ft.
then for each cubic foot you can hold 7.5 gallons of water which means multiply your volume by 7.5