18" x 18" x 16" = 5,184 cubic inches = 22.442 gallons (rounded)
1 gallon = 231 cubic inches
That is approximately 34 Imperial or 40 US gallons.
This container can hold up to 29.61 gallons.
78.55 Gallons
65
30 gallons!
about 18 gallons
I will work with the assumption that you mean an 18 inch diameter pipe. The radius (r) is 9 inches and the length (l) is 12 inches per foot. The volume contained will be calculated by ∏r2l = ∏ x 92 x 12. If we use 3.1416 as the value of ∏, that gives us 3.1416 x 81 x 12, which works out at 3,053.6352 cubic inches of water. Now, an Imperial gallon and a US gallon are different - an Imperial gallon holds 277.42 cubic inches and a US gallon holds 231 cubic inches So in Imperial gallons the 12 inches of pipe holds 3,053.6352 / 277.42 = 11.0072 gallons and in US gallons it holds 3,053.6352 / 231 = 13.2192 gallons.
18 US quarts is 4.5 US gallons.
A well set up and properly filtered 30 gallon tank would accommodate 1 oscar. It is recommended to have up to 55 gallon tank as they can grow up to 18 inches.
A gallon is equal to about 3.785 liters. A 60 liter tank will hold 15.85 gallons.
About 47.6 gallons
Assuming that the given dimensions are inches, it would be 112.2 gallons.
231 cubic inches = 1 US gallonVolume of your container = 60" x 12" x 18" = 12,960 cubic inches = 56.104 US gallons (rounded)
The container has a volume of 4160 cubic inches (26x16x10). Assuming you are talking about gallons of water, it will hold 18 gallons (231 cu in per gallon).
44.88 gallons
The volume of a container requires three measures: 18 x 30 is not enough.
42
761.9 for the length of 42 inches, or 1777.78 per width of 18 inches
168.311 US gallons.
Approx 40.5 US gallons.
41.5 US gallons.
84.16 US gallons