how do i calculate how many gallons are in my fish tank? its 12 inches deep and its 24 tall and 4 feet wide?
398712
12 in x 24 in x 48 in = 13824 in^3\n\nUse these conversion identities:\n1 in = 2.54 cm\n1 cm^3 = 1 mL\n1000 mL = 1 L\n3.8 L = 1 gal\n\nTherefore, from the first identity,\n2.54 cm/1 in = 1\n\nCubing both sides, we have\n2.54^3 cm^3/1 in^3 = 1\n\nFrom the other identities,\n1 mL/1 cm^3 = 1\n1 L/1000 mL = 1\n1 gal/3.8 L = 1\n\nSince all of the above expressions equal 1, then you may multiply it to 13824 in^3 and the value will not change.\n\n13824 in^3\n= 13824 in^3 (1)(1)(1)(1)\n= 13824 in^3 (2.54^3 cm^3/1 in^3) (1 mL/1 cm^3) (1 L/1000 mL) (1 gal/3.8 L)\n= 59.614 gal or just 59 gal\n\n^_^
214638
I am assume stand temperature and pressures at the surface of the earth.\n\nThe volume of the liquid is: \n1 inch x 1 acre \n= 1 in. x 43560 sq. ft.\n= 1 in. x 208.71 ft x 208.71 ft (assume square acre)\n= 1 in. x 2504.52 in x 2504.52 in\n= 6272620.4 cubic inches \n= 27154.2 Gallons (assumung US Gallon)
725266
12 x 16, that will equal square feet (192)\njust measure length times width to calculate square footage
8752
On average, around 12 or more gallons (3/4 of body weight).
152321
1 gallon of water=8.33 pounds\n\n\nGallons into Pounds: Multiply the specific gravity of the liquid by 8.33* (weight in pounds of 1 gallon of water); then multiply this result by the number of gallons, to obtain the weight in pounds.
1046488
length x width (in inches)\n\ndivide by 12 ( feet)
1170149
1 foot = 12 inches.\n4 feet = 48 inches.
846062
12 inches X 12 inches *2   \nGo from south to north 12 inches then east to west 12inches,and repeat once, now there between you have a square foot.
17004
V = πr2h\n1.v = 36 cubic inches = 0.15584410891073416 us galons\n\n2. v = 36 0.15584410891073416 us gallons \n\n3.v = 72 = 0.3116882178214683 us gallons
860533
long sides are 24ft and short sides are 9ft.\n\nArea = width x lenth\n216 = 24 x 9\n\nDimensions 24+24+9+9 = 66
1022330
Gallon is a volume measurement unit while square inches is an area measurement unit.  You can't compare them.  If you mean cubic inches, there are 231 cubic inches in a gallon.
639676
You can do this with some math.  I'm assuming 12 feet is the diameter.  So the radius would be half that, or 6 feet.  2.5 feet (30 inches) is the height.\n\nThe volume of a cylinder is the area of the circle, times the height.\n\nV = pi r^2 h\n\nSo the volume is 3.14159 x 36 x 2.5\nThis is approximately 282.743339 cubic feet.\n\nOne cubic foot holds 7.48051945 US gallons, so you multiply 282.74 x 7.48 to get around 2,115 gallons.\n\nIncidentally, a gallon of water weighs 8.34 lbs, so you are talking about 17,639 lbs or nearly 9 tons of water!!!  Be sure the sides and the base are well constructed.
625809
convert everything to ft. (its easier). now, find the volume of the deep area (length times width times height). then divide by the volume by the bags of mulch
261582
Of course, you would have to convert the English to Metric, but...\n\nObtain the volume (in cubic feet) of the water (i.e. Length times width times height)\nConvert cubic feet to gallons (i.e. 7.48 gallons/cubic foot)\nObtain the weight of the water (i.e. 8.34 pounds/gallon)
567447
The volume of the tank is 40 x 30 x 15 = 18000 cubic centimeters, which is the same as 18000 milliliters (mL).  12 Liters = 12000 milliliters, so it will take 18000/12000 = 1.5 minutes.  I am a high school math teacher.
1115492
328 million gallons is a gross under estimate. If your estimate of suface area of 68 million square miles is correct.... and thre is 5280 feet in a mile... and 7.48 gallons (US liquid measurement)per cubic foot... that would mean there is 208.5 MILLION gallons of water in 1 square mile of ocean that was only 1 foot deep.\n\nA cubic mile of water contains 1,101,040,680,960 gallons of water... so IF the estimate of 68 million square miles of ocean is correct, and the ocean were and AVERAGE of 1 mile deep (and I assure you its deeper)  then there would be 74 million of TRILLIONs of gallons of water in the ocean... to spell that out ... 74,870,766,310,000,000,000 gallons of water in a body of water 68 million square miles in area and 1 mile deep... again.. this is if the estimates give were correct.\n\nHowever the given estimates are not correct... the ocean covers approximately 140 million square miles and has an average depth of 12,220 feet. which is just over 2 miles... so the actual calculation should look like this.... 5,280 x 5,280 x 12,220 x 140,000,000 x 7.48  giving you  a whopping 356,753,863,100,000,000,000 gallons of water contained in the worlds oceans... APPROXIMATELY\n\n... I had better get a best answer for this....
882237
2 ways:\n1. take the width in inches times the length in inches and divide by 144\n2. convert the inches to feet by dividing by 12, then take the width in feet times t he length in feet