How many gallons of water in an 8' x 3' x 2' stock tank?

To calculate the volume of an 8' x 3' x 2' stock tank, multiply the dimensions: 8 feet × 3 feet × 2 feet = 48 cubic feet. Since there are 7.48 gallons in a cubic foot, the total volume in gallons is 48 cubic feet × 7.48 gallons/cubic foot = approximately 359.04 gallons. Therefore, the stock tank holds about 359 gallons of water.