You will need

- - the range;
- calculator;
- - twine.

Instruction

1

Before you calculate the volume

**of the barrel**, carefully inspect it. Modern**barrels are**usually manufactured industrially. So they have a standard volume that is certainly somewhere specified. The capacity**of the barrel**(or its contents) can also be found in accompanying documents (waybills, invoices, etc.).2

In some cases, the volume is easier to determine experimentally. To do this, take a bucket of known capacity and just fill the barrel with water, counting the number of buckets. If some of the water from the last bucket will not fit in the barrel, measure the amount of "extra" water liter jar and subtract from the total volume, obtained by measuring the buckets.

3

Most modern metal and plastic casks are cylindrical in shape. To find the volume of this

**barrel**, measure its height and diameter. Try to measure the internal diameter**of the barrel**, if you are interested in the capacity of**barrels**, and not how much space the barrel is in the cellar. Then, multiply the height**of the barrel**(in meters) by the square of the diameter (in meters) then multiply by the number PI (3,14) and divide by 4. If the barrels much, in advance, divide PI by 4 and multiply the resulting factor by the height and the square of the diameter. As a formula this rule would resemble the following:Vцб = π/4 * D2 * Neely Vцб ≈ 0,785 * D2 * H where:Vцб – the volume of the cylindrical**barrel**,D – inner diameter of the bottom/cap**of the barrel**.π is the number PI, approximately equal to 3.14.4

To measure the diameter

**of the barrel**, take a piece of string and fix one of its ends on the edge**of the barrel**. Then look at the opposite edge**of the barrel**most distant point and mark it on the string (for example, tie the knot). Measure the length of string using the ruler or tape measure. Write the result in meters as a decimal. When measuring the height**of the barrel**problems should arise. However, note that some**barrels**have a "soaring" bottom, so you need to measure the inner height**of the barrel**.5

If the lid

**of the barrel**in any way specify its center (e.g., in the center is a hole for drainage), instead of diameter measure the radius**of the barrel**. The formula to calculate the volume**of the barrel**in this case will be the same: Vцб = π * R2 * H where:R is the radius of the bottom/cap**of the barrel**,6

If no diameter or radius

**of the barrel**is impossible to measure (e.g.,**barrels**are several "floors"), then determine its "girth" . To do this, take the twine and wrap it around the**barrel**.Since circumference is calculated by the formula:L = π * D, where: L – the circumference (the circumference)**of the barrel**,the diameter of the**barrel**will be equal to the circumference divided by π:D = L / π.This leads to a simple formula:Vцб = L2/4π * Neely Vцб = L2/12,566 * H,7

To find the volume of this wooden

**barrels**, use a practical formula that applies the majority of winemakers:Vкб = 3,2 * r * R * H where:Vкб – volume classic**barrel**r is the radius of the bottom/cap**of the barrel**, R is the radius of the widest part (the middle)**of the barrel**.8

So how to measure the radius of the widest part

**of the barrel**is problematic, it is better to use the formula:Vкб = 0,8 * d * D * H. where:d – diameter of the bottom/cap**of the barrel**, D – diameter of the widest part (the middle)**of the barrel**.