A box with these dimensions can hold up to 16,921 US gallons of water.
A box measuring 29 x 26 x 3 feet has a volume of 2,262 cubic feet. This means the box could hold up to 16,920 US gallons (or 14,090 UK gallons) of liquid.
13.36 Feet.
If these dimensions are inches then the box will hold up to 124.7 US gallons of water.
So this is a volume, and if it is a rectangular box or shape, the math is just 40x20x1, which is 800 cubic ft
It depends how big the box is...
If memory serves me correctly, a gallon of water weights 8.34 lbs. That would be about 48 gallons. About 3 feet X 4 feet X 5 feet.
A square box measuring two feet per side.
26 gallons for Short Box 34 gallons for Long Box
Assuming that the joints don't leak, the box is full to the top edge, and won't break when full of water: 1 gallon = 231 cubic inches 8.5 ft = 102 inches 14.5 ft = 174 inches Volume of the box = (102 x 174 x 7) = 124,236 cubic inches = (124,236 / 231) = 537.82 gallons (rounded) = almost 4,500 pounds of water !
58 cubic feet is a measure of volume such as the inside of a box or other container. Fifty-eight cubic feet could contain up to about 434 US gallons of water.
26 gallons for short box for long box 32 gallons
The total volume is 26 649 cubic inches.Transformed in gallons equals 115,3636 gallons.