You cannot calculate the amount of volume (gallon) that an object can hold without a third dimension. Currently you only have two.
A cylinder 7 ft in diameter and 100 ft tall has a volume of pi * 3.5 * 3.5 * 100 = 3848.45 cu ft. A US gallon is equal to 231 cu ft so the cylinder would contain 16.66 US gallons. The US gallon is 0.833 of an Imperial gallon so the cylinder would hold 16.66 * 0.833 = 13.88 Imperial gallons (approx).
22.032 gallons (rounded)
70.8 gallons of water.
A cylinder 30 inches in diameter and 48 inches tall will have a volume of 33929 cubic inches. V=PI*r*r*H (V=3.1416*15*15*48) That volume is equal to 146.9 gallons (USA). (1 gal = 231 cubic inches)
If that is 4 feet tall and 18 inches in diameter, it would be 16.83 gallons.
cylinder = pi x r(squared) x h
Assuming the dimensions given are inside dimensions, the cylinder will hold 55.75 gallons - less if the dimensions given are outside dimensions.
A cylinder 7 ft in diameter and 100 ft tall has a volume of pi * 3.5 * 3.5 * 100 = 3848.45 cu ft. A US gallon is equal to 231 cu ft so the cylinder would contain 16.66 US gallons. The US gallon is 0.833 of an Imperial gallon so the cylinder would hold 16.66 * 0.833 = 13.88 Imperial gallons (approx).
22.032 gallons (rounded)
70.8 gallons of water.
There would be a total of 18.84in3 inside the cylinder.
72 gallons.
A cylinder 30 inches in diameter and 48 inches tall will have a volume of 33929 cubic inches. V=PI*r*r*H (V=3.1416*15*15*48) That volume is equal to 146.9 gallons (USA). (1 gal = 231 cubic inches)
1028.1567 gallons Volume of a cylinder is (Pi) x (radius of cylinder)2 x (height of cylinder) There are 231 cubic inches in 1 gallon, so I converted the feet to inches prior to calculating the volume. Therefore: Volume=(3.14159)(30)2(84)=237504.2 inches3 Divide that by 231 and you get 1028.1567 gallons.
You can use the formula for the volume of a cylinder to calculate that.
To calculate the volume of a cylinder, we use the formula V = πr^2h, where r is the radius (half of the diameter) and h is the height. First, convert the diameter to radius (2.75 inches ÷ 2 = 1.375 inches). Then, plug the values into the formula: V = π * (1.375)^2 * 37. Finally, convert the volume to gallons based on the unit conversion rate (1 gallon = 231 cubic inches).
If that is 4 feet tall and 18 inches in diameter, it would be 16.83 gallons.