A company installs a rectangular septic tank 20ft long by 5ft wide and 8ft deep. Calculate the capacity of the tank in gallons

Question

I'm stuck on this problem 

Answer 1

First, calculate the volume, in cubic feet, of the tank.  That will be ...

20 ft x 5 ft x 8 ft = 800 cubic feet.

 

Next convert 800 cubic feet into gallons.  The conversion factor is 1 cubic foot = 7.48052 gallons (I had to look it up).

 

800 cubic feet x 7.5 gallons/cubic foot = 6,000 gallons