How much water fills a 24x12.5x12.5 tank?

To determine the volume of water that fills a tank with dimensions 24 inches long, 12.5 inches wide, and 12.5 inches high, you can use the formula for volume: length × width × height. This gives you a volume of 24 × 12.5 × 12.5 = 3,750 cubic inches. If you want to convert this to gallons, there are about 231 cubic inches in a gallon, so the tank would hold approximately 16.24 gallons of water.