How to determine cylinder volume

How to determine cylinder volume

The cylinder as a geometrical figure, can be parabolic, elliptic, hyperbolic. Even the prism by definition is one of private forms of a cylinder. However in absolute majority of cases mean a figure in which bases circles lie by a cylinder, and the corner between a side surface and the basis makes 90 °. Formulas of calculation of volume for such cylinder are given below.

Instruction

1. If the area of the basis of a cylinder (S) and its height (H) are known, then multiply these two known sizes to calculate the volume (V) cylinder: V=S∗H. For example, if the area of the basis is equal to two square meters, and height - to four meters, then the volume of a cylinder will be 2∗4=8 cubic meters.

2. If the radius of a circle of the basis of a cylinder (R) and its height (H) are known, then multiply number p (π) by a square of the known length of radius and by its height for calculation of volume (V) figure: V=π ∗ R² ∗ H. For example, if length of radius of the basis is equal to fifty centimeters, and height - to four meters, then the volume of a cylinder will be 3.14∗0.5² ∗ 4=3.14 cubic meters.

3. If diameter of a circle in the basis of a cylinder (D) and its height (H) is known, then the volume of a figure will be equal to one quarter of the work of height on number p (π) and a square of the known length of diameter of a circle: V=H ∗π ∗ D²/4. For example, if length of diameter of the basis is equal to two meters, and height - to four meters, then the volume of a cylinder will be 4∗3.14∗2²/4=12.57 cubic meters.

4. If length of a circle of the basis of a cylinder (L) and its height (H) are known, then you find the volume of a cylinder (V) as the work of its height on private from division of a square of length of a circle into four numbers p (π): V=H∗L² / (4 ∗π). For example, if length of a circle of the basis is equal to two meters, and height - to four meters, then the volume of a cylinder will be 4∗2² / (4∗3.14) =1.27 cubic meters.

5. Practical calculations at calculation of values of volumes can be made by means of the calculator, and it is possible to use the search engine Nigma or Google - idle time in use a computing algorithm is built in it too. For example, for calculation of volume of a cylinder with the basic data used in the previous step, in the field of a search query of Google it is necessary to enter such text: "4 * 2^2 / (4 * p)".

Author: «MirrorInfo» Dream Team


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