2πr and πr² (Applications and Differences)
3.14 to two decimal places, which is also equal to 3.1353.145.
However, the value of π is usually written as 3.14, or 3.142.
Different formulae employ π, such 2πr to get a circle's circumference.
πr² is another formula, r is the circle's radius.
The circumference to diameter ratio of a circle is an irrational integer.
When calculating, square the radius before multiplying to avoid errors.
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