What is the measurement of a 55-gallon fish tank?
55 gallons = 12705 cubic inches. Assuming you mean a rectangular aquarium, you have infinite choices because volume = length x height x width. so choose 2 of the 3 dimensions and solve for the third since you already know the volume you want. Then if that dimension comes out unacceptabe alter your choice of the first 2 and do it again until you get all 3 dimensions. Example: You would like it to fit on a cabinet with 24 inch x 60 inch of usable space for the aquarium to sit upon. So you need to solve for the height. Get height by itself on one side of the = sign by dividing both sides by length x width. Now you have: volume/(length x width) = height Everything you know is on one side so plug in the numbers to see what the height would be: 12705/(24x60) = 8.8 inches - No, that's too short. So to make it taller you need to make one of the other dimensions shorter. Make the length shorter or the width shorter or some of both. Say you would like the height to be more like 16 inches. That's almost double your first try, so you need to cut one of the other dimensions by almost a half, or each about a quarter. so next you try 18"x45": 12705/(18x45) = 15.7" high.
