Calculation of volumes of bodies is one of classical types of problems of engineering activity and applied science. Generally this task is uncommon. Analytical formulas for calculation of volumes of difficult bodies can be very bulky. However volumes of a number of bodies pay off very simply. Volumes of many bodies of rotation are simple in calculation. For example, it is possible to count pipe volume, having made a number of simple mathematical operations.
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Instruction
1. Determine pipe R radius. If it is necessary to calculate the internal volume of a pipe, then it is necessary to find internal radius. If it is necessary to calculate the volume occupied by a pipe it is necessary to calculate radius external. By measurements it is possible to receive easily diameter (both internal, and external) and pipe section circle length. If diameter of a pipe is known, divide it into two. So, R=D/2, where D - diameter. If pipe section circle length is known, divide it on 2*pi where Pi =3.14159265. So, R=L/6.28318530, where L - circle length.
2. Find radius in a square and multiply it by Pi's number. So, S= Pi*R*R where R is pipe radius. Cross-sectional area will be found in the same system of units in which the value of radius was taken. For example, if the value of radius is presented in centimeters, then cross-sectional area will be calculated in square centimeters.
3. Calculate pipe volume. Multiply pipe cross-sectional area by its length. The volume of the pipe V=S*L where S is cross-sectional area, and L - pipe length.