3.14*x2=127.388535

Solution for 3.14*x2=127.388535 equation:

3.14x^2=127.388535

We move all terms to the left:

3.14x^2-(127.388535)=0

We add all the numbers together, and all the variables

3.14x^2-127.388535=0

a = 3.14; b = 0; c = -127.388535;
Δ = b2-4ac
Δ = 02-4·3.14·(-127.388535)
Δ = 1599.9999996
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{1599.9999996}}{2*3.14}=\frac{0-\sqrt{1599.9999996}}{6.28}
=-\frac{\sqrt{}}{6.28}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{1599.9999996}}{2*3.14}=\frac{0+\sqrt{1599.9999996}}{6.28}
=\frac{\sqrt{}}{6.28}
$