8*1.8=(1/16)*3.14*x^2

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Solution for 8*1.8=(1/16)*3.14*x^2 equation: 


x in (-oo:+oo)

1.8*8 = 3.14*(1/16)*x^2 // - 3.14*(1/16)*x^2

1.8*8-(3.14*(1/16)*x^2) = 0

1.8*8-0.19625*x^2 = 0

-0.19625*x^2 = -14.4 // : -0.19625

x^2 = 73.37579618

x^2 = 73.37579618 // ^ 1/2

abs(x) = 73.37579618^(1/2)

x = 73.37579618^(1/2) or x = -73.37579618^(1/2)

x in { 73.37579618^(1/2), -73.37579618^(1/2) }

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