A(f)=3.14r^2

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Solution for A(f)=3.14r^2 equation: 


Simplifying
A(f) = 3.14r2

Multiply A * f
fA = 3.14r2

Solving
fA = 3.14r2

Solving for variable 'f'.

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

Divide each side by 'A'.
f = 3.14r2A-1

Simplifying
f = 3.14r2A-1

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