The number Pi, symbolized by a Greek letter, has a constant value that approximately equals 3.14159. Pi is an irrational number, which means it cannot be expressed as a common fraction, and it has an infinite decimal representation without any repeating pattern.
Pi, by definition, is the ratio of a circle’s circumference to its diameter (Pi = C/d). This constant is used to solve the area of a circle, with the formula “Pi r squared” or “the product of Pi and the square of the length of the radius.” The rounded-off version of Pi is accepted for general computations. Here’s Pi up to 20 decimal digits: 3.14159265358979323846.
Learn MoreOf all the engineering disciplines, geometry is mostly used in civil engineering through surveying activities, explains TryEngineering.org. Geometry involves the analysis and study of relationships among shapes, and civil engineers design and assemble shapes to construct buildings, bridges, highway systems, tunnels, dams and other structures.
Full Answer >One reads a ruler by using the hash marks on the ruler to read off each large number, which denote inches. After one reads the inch on the ruler, then one reads the smaller linear marks next to that inch, which indicate the fractions of an inch.
Full Answer >Triangles have been used extensively throughout history in construction due to their rigid shape and strength. Unlike a square, that can shift into a parallelogram when force is applied to one of its sides, an equilateral triangle's sides and angles are fixed.
Full Answer >The number of symmetry lines for a star depends on the particular types of star. A five-pointed star has five lines of symmetry. However, a six-pointed star has six lines of symmetry.
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