Would help if you told us ACTUAL numbers instead of X inches !
74.42 gallons.
= 93.09 gallons (US) = 77.51 gallons (imperial)
Approximately 201 gallons.
Assuming it is a rectangle, 42.077 US gallons
A rough (high) estimate will use the volume of a rectangle. 155.42 US gallons
Volume = 29 x 21 x 9 = 5,481 cubic inches = 23.73 gallons (rounded)
If you mean inches, it can hold up to 6,739.95 gallons. If you mean feet, it can hold up to 11,646,630.24 gallons.
A tank of 21 inches wide, 8 inches deep and 59 inches long will hold 36 gallons of gas. These gallons refers to US gallons.
By my calculations (and they could be wrong--English major here), it would hold 11,320 gallons. Volume = πr2h = π(45.040848895006380022594105034422)2(40)
3.5 cubic inches holds 0.015 gallons.
To convert cubic inches to gallons, divide the volume in cubic inches by 231. This gives you the equivalent volume in gallons. In this case, a glass aquarium with a volume of 2315.52 cubic inches will hold approximately 10 gallons of water.
72"X18"x8"=10368 cubic inches 10368 cu in x 0.00433 cubic inches/gal = 44.9 gallons Answer: 44.9 gallons