5278.34=(3.14r^2)

Solution for 5278.34=(3.14r^2) equation:

5278.34=(3.14r^2)

We move all terms to the left:

5278.34-((3.14r^2))=0


We calculate terms in parentheses: -((3.14r^2)), so:

(3.14r^2)

We get rid of parentheses

3.14r^2

Back to the equation:

-(3.14r^2)


We get rid of parentheses

-3.14r^2+5278.34=0

a = -3.14; b = 0; c = +5278.34;
Δ = b2-4ac
Δ = 02-4·(-3.14)·5278.34
Δ = 66295.9504
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$r_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$r_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$r_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-\sqrt{66295.9504}}{2*-3.14}=\frac{0-\sqrt{66295.9504}}{-6.28}
=-\frac{\sqrt{}}{-6.28}
$
$r_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{66295.9504}}{2*-3.14}=\frac{0+\sqrt{66295.9504}}{-6.28}
=\frac{\sqrt{}}{-6.28}
$