ha..... i wish lol
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That is the formula for the area of a circle; r refers to the radius, and pi is approximately 3.14. r squared means that you multiply r x r.
The area of a circle = pi*r2
A=pi(r)squared
The raduis.It's pi, r squared. the r stands for radius!
area equals pi r squared therefor r squared equals area over pi. Now find square root of r squared and you have "R" (radius) = 2.821