I am assumiong 18 inches inside diameter. Pi x 9 x 9 x 30=2430pi cubic inches or approximately 7634.0763 cubic inches. There are 1728 cubic inches in a cubic foot so 4.4178682 cubic feet.
Volume = 0.8727 cubic feet OR 1,508 cubic inches.
You didn't provide enough information to fully answer this question. Volume requires 3 dimensions, and you provided 2 (or didn't fully explain the 3rd). To determine volume, you need length, width and height LxWxH=Volume. I'll explain how to solve this math problem the best way I can. 1 gallon = 231 cubic inches http://www.onlineconversion.com/volume.htm Now that you know there are 231 cubic inches per gallon, determine the volume of water you need in inches. I'm going to guess you were meaning the tube is 12 inches long and either a 4 inch diameter. Volume of a cylinder can be acheived by multipling the area of the base times height. Assuming your cylinder is a perfect circle with an inside diameter of 4 inches, the base would be PI * r2 or 3.141592 * (2*2) or 12.535668 inches square. Multiply this times the height (12), and you'll get the cubic inches required to fill the cylinder...or 150.796416 cubic inches. Divide by 231 (cubic inches per gallon) equalling .6528 US gallons required to fill the tube.
Volume of a cylinder = (pi) R2 L = (pi) (10)2 (1,500 x 12) =5,654,866.8 cubic inches = 24,480 gallons (rounded)That's the volume of the section of pipe. We have no wayof knowing how much water is in it.
A 14 inch diameter pipe has cross sectional area 154 sq ins, so 1 foot length = 12 inches will have volume 1848 cubic inches. 1 US gallon = 3.8 liters = 3800 cubic centimeters(cc). 1 cubic inch = 16.39 cc. So 1 US gallon = 231.85 cubic inches. So 1 foot of pipe will contain 1848/231.85 = 7.97 gallons, say 8 gallons.
Do you mean a fixed length of 5 inch pipe or are you asking to the amount of laminar flow through a 5 inch pipe? There is not enough info here to answer. Need length of pipe and what you are asking.
The volume of a 4-inch wide by 8-inch long cylinder is: 101 cubic inches.
The cube's volume is 0.216 cubic inches.
The volume of a cube whose edges are 4.5 inch long is: 91.13 cubic inches.
The volume is 0.7418 cubic feet OR 1,281.8 cubic inches. This pipe would contain 5.549 gallons of water.
3,465
Volume = 0.8727 cubic feet OR 1,508 cubic inches.
This cylinder's volume is 35,342.9 cubic inches.
It is: 9*4.5*3 = 121.5 cubic inches
A pipe that is 30 inches in diameter and 12 feet long has a volume of: 440.6 US gallons of water.
If a cylinder has a diameter of 4 inches, then it has a radius of two inches, and the area of that circle is pi, 3.14, times radius squared which is 4 square inches, for a total of very close to 13 square inches; multiply that by the 4 inch length of the cylinder and you get 52 cubic inches.
Convert everything to a single unit - everything to inches, or everything to feet - then use the formula for the volume of a cylinder.
Volume = pi*r2*h = pi*82*1= 201 cubic inches, approx.