What is “PI”, and what is its significance? PI, designated by the Greek letter π, is a mathematical constant defined as the ratio of a circle’s circumference to its diameter. This Circumference/Diameter ratio used to calculate π is depicted below:
Often approximated fractionally as 22/7 or rounded to 3.14159, π is an irrational number that cannot be represented with terminating or repeating decimals.
In engineering and construction, understanding π is of critical importance, as it is impossible to build various structures and building features without measuring or controlling critical diameter or circumference dimensions.
Aussie World Ferris Wheel (1, upper left); Leaning Tower of Pisa (2, upper right);
St. Peter's Basilica (3, lower left); Izumo Dome (4, lower right).
In building the Exodus Tabernacle Courtyard curtain set, the same basic understanding of π or PI is also required, as illustrated in the sketch below:
Next Page: Ancient PI (π)
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