Question

what are the types measurement systems that we use in calculation

Answer 1

Generally three types of measurement systems are used i.e, the CGS, the FPS (or British) system and the MKS
systems.
The base units for length, mass and time in these systems
were as follows :
• In CGS system they were centimetre, gram and second
respectively.
• In FPS system they were foot, pound and second
respectively.
• In MKS ( or metric system) - The metric system is a decimal systems of measurement based on its units for length, the metre and for mass, the kilogram. It exists in several variations, with different choices of base units, though these do not affect its day-to-day use