You will need

- measuring tools;
- calculator.

Instruction

1

Use for calculating volume

**of a cylinder**formula:V = H x S, where V is the volume**of the cylinder**; H-height; S – the area of one of the bases; x is a multiplication sign.This formula can be applied only in the case when the footprint is known from the conditions of the problem and requires no prior calculations. For example, if the height**of the cylinder**is 2 m and the area of one of its bases is equal to 3.5 m, then V = 2 x 3.5 = 7 cubic meters.2

If the footprint of unknown conditions previously perform a calculation. For this construct in the square is known or measured the radius of the circle lying at the base, and multiply it by the number "PI" equal approximately to 3.14. For example, if the radius is 1.2 m, the footprint is: S = 1.2 x 1.2 x 3,14 = of 4.52 sq. m. Now multiply the value by the height

**of the cylinder**to get volume.3

In the case of known diameter

**of the cylinder**and height calculate the volume of geometric solids according to the formula:V = 3,14 x H x D2 / 4, where V is the volume**of the cylinder**; 3,14 – the PI; H – height of**cylinder**; D – diameter; x – multiplication; / – division sign.So if the diameter of the circle lying at the base is 0.5 m, the height**of the cylinder**is 1.2 m, the volume will be: 3,14 x 1.2 x 0.5 x 0.5 / 4 = of 0.236 cubic meters.4

At a known length of the circumference of the base and height find the volume

**of the cylinder**as the product of the height**of the cylinder**to the quotient of the square of the circumference by the following formula:V = x L2 H / (3,14 x 4), where V is the volume**of the cylinder**; 3,14 – the PI; H – height**of the cylinder**; L is the length of the circle lying at the base**of the cylinder**.5

If you need to measure the real volume

**of the cylinder**, before carrying out calculations for one of the above formulas produce a measurement of the object by means of measuring instruments. To measure the linear parameters of the geometric body use a ruler, calipers, measuring cord or tape.6

Apply the principle of copying, if to measure parameters

**of the cylinder**in place is not possible. To do this, take a picture of the cylinder, including its base and height, by placing next to a ruler or object of known size, e.g. a matchbox. Then measure the size of photographs, transferring the data at the appropriate scale.