The answer depends on which of the two measures is the height and which is the radius or diameter. Since you have not bothered to share those crucial bits of information, I cannot provide a more useful answer.
Assuming it is a rectangle, 8.485 US gallons
2240 Imperial fl oz = 14 Imperial gallons.
A circle with a 14 inch diameter has an area of 153.9 sq inches.
Just over 20 gallons
Its perimeter: 12+14+12+14 = 52 inches
The formula for the volume of a cylinder is pi * r^2 * h. A cylinder of the specified dimensions would have a volume of very close to 4000 cubic inches. There are 231 cubic inches in a gallon, so that works out to slightly under 17 and a third gallons. That's a rather tall and skinny "barrel", by the way.
Assuming it is a rectangle, 8.485 US gallons
About 16.
1 gallon = 231 cubic inchesVolume of the 1-foot cylinder = pi R2 L = pi (7)2 (12) = 1,847.26 cubic inches = 7.997 gallons (rounded)That's 0.4 ounce less than 8 gallons, per foot.
pi x 8 inches x 14 inches = 352 square inches (rounded)
596.9 square inches.
V = pi R2 L V = pi x (14)2 x 30 = pi x 196 x 30 = 5,880 pi = 18472.565 in3 = 79.9678 gallons (rounded)
52995.764976mL = 14 US gallons63645.26 mL = 14 imperial gallons
14 US gallons = 53.00 litres.
14 gallons is 1,792 fluid ounces.
volume = L x Wx H 20 x 14 x 48 =13,440 that is in inches..not gallons so your tank is 13,440 square inches...it will hold 58.18 gallons. See the link for computing volume, you can also determine how many gallons you are putting in it if you only partially fill it.
715/14 = 51.07 gallons (rounded)