s=4(3.14)(x/3)^2

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Solution for s=4(3.14)(x/3)^2 equation: 


x in (-oo:+oo)

s = 3.14*4*(x/3)^2 // - 3.14*4*(x/3)^2

s-(3.14*4*(x/3)^2) = 0

s-12.56*(x/3)^2 = 0

-1.3955555416*x^2 = -s // : -1.3955555416

x^2 = 0.71656052*s

x^2 = 0.71656052*s // ^ 1/2

abs(x) = 0.71656052^(1/2)*s^(1/2)

x = 0.71656052^(1/2)*s^(1/2) or x = -(0.71656052^(1/2)*s^(1/2))

x in { 0.71656052^(1/2)*s^(1/2), -(0.71656052^(1/2)*s^(1/2)) }

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