Very often school students make requests in the search engine: how to find square volume. The answer can be only one: it's impossible. A square - a two-dimensional figure (two parameters: length and width). It is necessary to have the third characteristic for calculation of volume: heights. Perhaps, calculation of the area of a square, its perimeter or calculation of volume and surface area of a cube means.
Instruction
1. A square - an equilateral quadrangle in which each corner is equal 90 °. To find the area (S) it is necessary to increase its length (l) by width (b). As length and width are equal in this figure, the nobility one of sizes is enough. Edinitsy izmereniya Square: cm?, m?, km? etc. For example: length of one party of a square = 5 cm. It is necessary to calculate the area. Find it on a formula: S = l * b. S = 5 cm * 5 cm of S = 25 cm?. Answer: the area of a square with the party of 5 cm is equal to 25 cm?.
2. A cube - a polyhedron, in which each side – a square. The cube has twelve edges which are equal each other (t.e length, width and height of one side is the length (height) of an edge) and six identical parties. To find cube volume, it is necessary to multiply three of his edges (a). Volume units of measure: cm?, dm?, m? etc. For example: length of an edge is 5 cm. It is necessary to find cube volume. Calculate by a formula: V = and * and * and or V = a?. V = 5 cm * 5 cm * 5 cm of V = 125 cm? Answer: cube volume with a length of edge of 5 cm is equal to 125 cm?.
3. If it is necessary to calculate the area of all parties of a cube, then at first find the area of one party, and then summarize the areas of all six parties. For example: it is known that length of one side of a cube of 5 cm. It is necessary to find the area of its surface. The decision has an appearance: 1. S = 5sm*5 cm = 25 cm? 2.? = S + S+ S + S + S + S or S? = 6*SS? = 6*25sm? = 150 cm? Answer: cube surface area with a length of edge of 5 cm - 150 cm? If it is required to find one of geometrical characteristics, knowing the volume of a cube or the area of a square, then from value of volume the cubic root, and is taken from value of the area - square.
4. The perimeter of a square represents the sum of lengths of all parties. I.e. it is necessary to put values of four of its lengths. For example: length of a square is 5 cm. Calculate perimeter. For calculation of perimeter of any rectangle it is possible to use a formula: P = 2 * (l+b). For a square the formula has the simplified appearance: P = 4*l P = 4*5sm = 20smotvet: perimeter of a square 5 cm long – 20 cm.