A=43.14r^2

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Solution for A=43.14r^2 equation: 



=43.14A^2

We move all terms to the left:

-(43.14A^2)=0

We get rid of parentheses

-43.14A^2=0

a = -43.14; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-43.14)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$A=\frac{-b}{2a}=\frac{0}{-86.28}=0$

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