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16 sty 2012 · In summary, cm^2 represents a square with sides 1 centimeter long, while cm^3 represents a cube (or box) with sides 1 centimeter long. This means that 1 cm^2 has an area of 1 square centimeter, and 1 cm^3 has a volume of 1 cubic centimeter.
cm$^2$ is used when we want to find the specific area of something. Why cm$^2$? Let's say we want to find the area of a rectangle that is $8$cm long and $7$cm wide. Normally you would just do $8\times 7=56$ and attach the cm$^2$ to the end of it.
Mathematical symbols use a roman, serif font (½, +, √, cos) — except when they are applied to calculations with units. Units are written with a roman, sans-serif font (m, N, ℃) as are mathematical operations with numbers and units (7 kg × 10 m/s ÷ 3 s = 23.3 N). Symbols for physical quantities and their international units
The arguments of any of the standard mathematical functions such as trigonometric functions (such as sine and cosine), logarithms, or exponential functions that appear in the equation must be dimensionless. These functions require pure numbers as inputs and give pure numbers as outputs.
This is a list of common physical constants and variables, and their notations. Note that bold text indicates that the quantity is a vector.
The dimension of any physical quantity expresses its dependence on the base quantities as a product of symbols (or powers of symbols) representing the base quantities. (Figure) lists the base quantities and the symbols used for their dimension.
The area equal to a square that is 1 centimeter on each side. Used for measuring small areas such as on drawings. The symbol is cm 2. Example: An A4 sheet is 29.7 cm by 21 cm, so has an area of 623.7 cm 2.
