A=(3.14)(400m)2

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Solution for A=(3.14)(400m)2 equation: 



=(3.14)(400A)2

We move all terms to the left:

-((3.14)(400A)2)=0



We calculate terms in parentheses: -((3.14)400A2), so:

(3.14)400A2

We multiply parentheses

1256A^2

Back to the equation:

-(1256A^2)



a = -1256; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-1256)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$A=\frac{-b}{2a}=\frac{0}{-2512}=0$

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