You're looking for the volume function here. V=LWH
In this case the length is 8 feet L=8 Width is 28 inches, and since there's twelve inches in a foot, it's 28/12 feet W=28/12=2[tex] \frac{1}{3} [/tex] Height, or in this case depth, is 3 feet H=3
V=LWH V=(8)(2[tex] \frac{1}{3} [/tex])(3) V=56ft[tex]^{3} [/tex] Now you know how many cubic feet are in your tank. There are just around 7.5 gallons in a cubic foot. An estimated answer then would be the volume times 7.5
56·7.5=420
There's an estimated answer. If you need exact EXACT, then using the exact amounts and everything the answer comes out to 418.909 gallons.
