To calculate the volume of a cube it can be necessary not only at the solution of mathematical tasks. For example, you need to know how many bricks are in packing of a cubic form or how many liquid or solid will be located in a container. For this purpose, of course, it will be required to find out some more parameters, but first of all it is necessary to calculate cube volume.
It is required to you
- To remember definition and properties of a cube
- Measuring device
Instruction
1. Remember what is a cube. It is the correct hexahedron — a solid which each side represents a square. As all parties of a cube it is identical — that and its sides are equal among themselves, as well as edges. That is for scoping you need to know the size of only one side.
2. Remember, what it is equal to parallelepiped volume. It is equal to the area of the basis increased by height. But at a cube length, width and height are equal among themselves. The cube can be put on any side, all the same the area of the basis bydt the same, as in initial situation. Designate a cube edge as and. Find the area of the basis. It is equal to the work of length on width, that is S=a2.
3. Calculate volume, having increased the area of the basis a2 by height which in this case is also equal and. Respectively, the volume of V will be equal to the cube edge size built in the third degree. V=a3.
4. If you need to calculate amount of substance which is supposed to fill a container of a cubic form, then it is necessary to know density of this substance. This quantity will be equal to density increased by cube volume. And to calculate, for example, quantity of bricks in a container of a cubic form, it is necessary to calculate the volume of each brick then to divide container volume into brick volume.