A(r)=3.1416

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Solution for A(r)=3.1416 equation: 


Simplifying
A(r) = 3.1416

Multiply A * r
rA = 3.1416

Solving
rA = 3.1416

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Divide each side by 'A'.
r = 3.1416A-1

Simplifying
r = 3.1416A-1

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