What is the cubic feet equal to 30" x 25" ? - Office Equipment & Supplies

You can convert pipe size to gallons per minute of flow by calculating the cross-sectional area of the pipe and making some reasonable assumptions about pipe volume and the rate of flow. Pipe sizing is measured by the internal diameter of the pipe, not the overall outside diameter. Once determined, the overall volume can be calculated. Pipe flow is described in gallons per minute. Shorter lengths of pipe will have a greater flow than a longer length of the same diameter. This is caused by internal resistance of the pipe itself. By the same reasoning a larger diameter pipe will have a greater flow or GPM than a smaller pipe at the same pressure or flow rate. Pressure is described as pounds per square inch. The square-inch measurement is determined by the area of the pipe. The pounds are the amount of force that is placed on the liquid to push it through the enclosed space.With that background, you can estimate the flow based on the pipe size.
Find the cross-section area of the pipe. Area is equal to pi times the radius squared or a = 3.14 x r2. A two-inch diameter pipe would have a cross-section area of 3.14 x 12 or 3.14 square inches.
Understand that water has a certain pressure associated with the height of that water. One pound of water pressure, or 1 PSI, is equal to 2.31 feet of elevation in height. In other words, a 1-inch column or pipe of water that is 2.31 feet high will have a pressure of 1 PSI. The overall height -- not volume -- of the pipe corresponds to the pressure. A 6-inch diameter pipe that is 2.31 feet high will only have 1 PSI.
Find the volume of the 2-inch diameter pipe in Step 1 that has a length of 10 feet. Ten feet is equal to 120 inches. Multiply 3.14 square inches, the cross sectional area, times the length. The volume of the pipe is equal to 376.8 cubic inches of volume.
Convert cubic inches into cubic feet. One cubic foot equals 1,728 cubic inches. Divide 376.8 cubic inches by 1,728 cubic inches per cubic foot and the answer is .218 cubic feet. This means that the 2-inch diameter pipe that is 10 feet long has an internal volume of .218 cubic feet.
Calculate the amount of water that can be contained in the section of pipe at any given time. One cubic foot of water is equal to 7.48 gallons. Multiply 7.48 gallons by .218 cubic feet and the amount of water in the pipe is equal to 1.63 gallons.
Find the GPM if the flow of water is one foot per second. Multiply the one-foot per second flow by 60 seconds per minute and the flow is now 60 feet per minute. In other words the water will flow through the 10-foot pipe six full volumes for every minute. Since the piping contains 1.63 gallons per 10 feet of pipe, multiply 1.63 by six and the final GPM is equal to 9.78 GPM of water flow from the 2-inch diameter pipe.

You can't convert cubic feet to square feet because cubic feet has an extra dimension, you could fit an unlimited number of square feet into cubic feet.

The formula for Cubic feet is:
length × width × height

The formula for Square feet is:
length × width

How it Works

Stone and Mulch Calculators

As an example, let's use 500 square feet to be mulched at a
3" depth.

1. First, the depth must be converted to feet. To convert inches to feet, simply divide inches by 12, the number of inches in a foot.
   
   So for our example: 3 inches divided by 12 equals a 0.25 foot depth.
2. Now that we have the depth in feet, we can multiply the depth by the area.
   
   So for our example: 0.25 foot depth times 500 square feet equals 125 cubic feet.
3. If you are calculating 0.5, 2, or 3, cubic foot bags, simply divide 125 cubic feet by the size of the bag.
   
   So for our example: if we are using 2 cubic foot bags, we can divide 125 cubic feet by 2 which equals 62.5 bags.
4. If you are calculating cubic yards, we need to convert 125 cubic feet to cubic yards by dividing by 27. One cubic yard is equal to 27 cubic feet, see the diagram below.
   
   
   
   So for our example: 125 cubic feet divided by 27 equals 4.63 cubic yards.

For Your Information

• 1 inch equals 0.08333 feet
• 1.5 inches equals 0.125 feet
• 2 inc

29.7 cubic feet equals 0.841 cubic meters or 841 liters.
222 US gallons equals 840 liters.
So 29.7 cubic feet is about 222 gallons.
Obviously that is the total volume and in a free liquid form as if poured into the refrigerator, not in containers of milk.

Hi Paula:
A mathematical logic question.
You need to get all of the measurements in the same units.
- A cubic yard is 1 yard x 1 yard x 1 yard
- equals 3 ft x 3 ft x 3 ft
- equals 27 cubic feet,
so once you have the volume of the pipe in cubic feet, you divide by 27 to get the volume in cubic yards.
- Volume of a cylinder (the pipe) is the cross sectional area X length.
- Area equals Pi x r squared.
- equals 22/7 x 1 x 1
equals 3.14#####
times length (20)
equals 62.857### cubic feet volume
divide by 27 cubic feet
equals 2.328### cubic yards.

- The answer is always the easy part.
- what is important is knowing exactly what the question is, and
- determing what calculations are needed to get the answer.

Wasn't that better than if I'd just said 2 1/3 cubic yards?
Cheers

2.33 Cubic Yards

Hi Bob:
1 cubic yard is 3ft by 3 ft by 3 ft.
3 times 3 times 3 equals 27, so
1 cubic yard equals 27 cubic feet.
2 1/2 inches divided by 12 inches equals .2083333 feet
196 square feet times .208333 feet equals 40.83333 cubic feet
40.83333 cubic ft divided by 27 cubic ft equals 1.5123456 cu yards.
Ta Da!!!!

1 Cubic Foot = 29.9220779 Quarts [Fluid, US]
1 Cubic Foot = 25.71404638 Quarts [Dry, US]
1 Quart [Fluid, US] = 0.0334201389 Cubic Feet
1 Quart [Dry, US] = 0.0388892508 Cubic Feet

So roughly about 2.1 Cubic feet

11 feet times 12 feet equals 132 square feet in flooring it is square feet . easy think of a box and it is 11 by 12 and ? tall so lets make ? 11 so cubic feet would 11x12x11 =1452 cubic feet

just under 18 cubic feet.
at 4 inches thick there will be 3 square feet to equal 1 cubic foot. there's .6 cubic feet in an 80 lb sac. I'd get 30 bags and be careful not to go over 4 inches deep to often.