π:
- The number π is a mathematical constant.
- It is the ratio between the circumference to diameter of a circle.
- The value of π is approximated as
- π = 3.142 in decimal.
- π = 22/7 in fraction.
- π = 3.141592 in calculator.
- It is represented in Greek letter.
- It is spelled out as "pi".
Importance of π in design:
- π is used for many different tasks and many different professions and assists in different aspects of design work.
- Circles of different sizes in design are formed by formulae using π.
- It is used to find the surface area of sphere to find out the amount of metal needed to make a metal sphere in design.
- Engineers who design things like tires, pipes, tubes and balls use π in every day life.
- Design of cylindrical shapes and circles uses π.
History:
- Using since mid-18th century.
Notes:
