# Pi performance equation

For a circle of radius r, the circumference and area are given by C = 2pir (1) A = pir^2. (2) Similarly, for a sphere of radius r, the surface area and volume enclosed are S = 4pir^2 (3) V = 4/3pir^3.

## PI DataLink User Guide (English)

PI Performance Equation (PE) Tags. The PI Performance Equation subsystem is used to execute PI PE calculation tags. The PE provides a set of functions and operators that

## Profitability Index (PI): Definition, Components, and Formula

PI performance equations can work with frequently updating snapshot and archive values, where tools like spreadsheets only have archive data and limited access to snapshot update values. Typical calculations include heat and material balances, unit performance, real-time cost accounting, and so on.

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Mathematics is the study of numbers, shapes, and patterns. It is used in everyday life, from counting to calculating taxes, and its applications are endless.