Convert a radius of a circle to the size of an ImageLabel?

Hey, I’m making an FPS game. Each weapon will have a “cone” that comes from the end of the barrel of the gun. How can I make an ImageLabel change it’s size based on the radius of the base of this cone?

Let’s say the cone’s radius is 5 studs. How can I make a circular crosshair that is 5 studs wide? Is there a way to automatically do this, or should I just design each crosshair different?

I’m not looking for someone to code this for me, I’m just looking for a hint that will lead me in the right direction. Thanks!