Its a four part question.

Question

You have a regular fish tank measuring 3 feet across by 2 feet deep by 2 feet high. You want to fill it 3/4 of the way with water.

a. what is the volume of the fish tank in cubic feet?

b. if one cubic foot is 7.48 gallons, how many gallons of water can the tank hold?

c. how many gallons will fill the tank 3/4 full?

d. would a fish tank measuring 3 feet across by 4 feet deep by 2 feet high double the volume of your fish tank?

Answer 1

a.  Volume=width*depth*height = (3 ft)*(2 ft)*(2 ft)  =  12 ft³

 

b.  Units conversion:    (12 ft³)*(7.48 gal / 1 ft³) = 89.76 gal     (notice how ft³ cancels, leaving gal)

 

c.  3/4 full is   (3/4)(89.76 gal) = 67.32 gal

 

d.  PLZ look at the expressions:    3*2*2   versus 3*4*2      yes, this doubles the volume