35
40mm diameter and 17mm tall (average tealight)
Keep it simple. Break it down. (Area of piston face) times the (stroke/height/tall), equals (Volume/Cubic Inches). So..., "A=Pi R2" translated is A (Area)= 3.14159 (Pi) X R (Radius) squared (R2), therefore done as an Algebra formula, work it from the inside out starting with the Radius first! 1/2 of the diameter of 1.125 = .5625 is the Radius. .5625 X .5625 = .31641 is the Radius squared. .31641 (Radius squared) X 3.14159(Pi) = .9940 (Area) .9940 (Area) times the (stroke/tall) being 2.250 = 2.2365 cubic inches/volume.
If it's full to the 42-inch depth, it's holding (49 x 42 x 42) cubic inches.1 gallon = 231 cubic inches.(49 x 42 x 42) / 231 = 374.2 gallons (rounded)
The area of Central tall grasslands is 248,400 square kilometers.
It will depend on what you are putting in it. Water weighs 8 lbs per gallon, so your container would hold 256 lbs of water. Dry materials will weigh less.
If that is 4 feet tall and 18 inches in diameter, it would be 16.83 gallons.
This cylinder has a volume of 0.951 US gallon.
A cylindrical tank 9 ft in diameter and 100 ft tall will hold ~190,418 gallons.
Assuming the dimensions given are inside dimensions, the cylinder will hold 55.75 gallons - less if the dimensions given are outside dimensions.
cylinder = pi x r(squared) x h
You need the cross sectional area, not simply the width.
411.4 US gallons, approx.
Assuming that the pool diamater diminishes 1 foot for each foot of height, and the pool is filled to the top, the total capacity would be about 6439 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)
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).
7.103 gallons. 220 The question used the word around instead of diameter. I failed to carry a naught in my first answer, but I think the answer to his question would be 22 Gallons. PS, I'm no math major.