.098=3.14*x^2

Solution for .098=3.14*x^2 equation:

.098=3.14x^2

We move all terms to the left:

.098-(3.14x^2)=0

We add all the numbers together, and all the variables

-(3.14x^2)+0.098=0

We get rid of parentheses

-3.14x^2+0.098=0

a = -3.14; b = 0; c = +0.098;
Δ = b2-4ac
Δ = 02-4·(-3.14)·0.098
Δ = 1.23088
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-\sqrt{1.23088}}{2*-3.14}=\frac{0-\sqrt{1.23088}}{-6.28}
=-\frac{\sqrt{}}{-6.28}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{1.23088}}{2*-3.14}=\frac{0+\sqrt{1.23088}}{-6.28}
=\frac{\sqrt{}}{-6.28}
$