The area of a circle is calculated by multiplying PI by radius squared, or simply:

$\frac{?}{PI}*$ radius $*$ radius

In the above expression, radius can be $r,$ or $x,$ or rad, or whatever you want it to be$.$ Assume the variable is named radius, for readability. Take a look at the following if statement. The area of the circle is calculated and displayed to the console ONLY IF what?

if $($radius $0)$

System.out.println$($radius $*$ radius $\%3\mathrm{.}14159$;

The value in the radius variable is either greater than $0$ or equal to $0$

The value in the radius is a negative value

The value in the radius variable is equal to $0$

The value in the radius variable is greater than $0$