\pi x^(2) = a

Question

`\pi x^(2)` = a

Answer 1

The formule is about area of a circle.

`\pi x^(2) = a`

We need to solve the equation for x. Where x is the radius of the circle.

In order to solve it for x, we need isolate it for x on left side.

So, first we need to get rid pi from left side.

On dividing both sides by pi, we get

`\frac{\pi x^2}\pi}=(a)/(\pi)`

`x^2=(a)/(\pi)`

Taking square root on both sides, we get

`√(x^2)=\sqrt{(a)/(\pi)}`

`x=\sqrt{(a)/(\pi)}`