Question Create a Circular HealthBar

Hey everybody,

I don't know if I am in the good topic, but i am a beginner in Unity and I don't arriv to make an HealthBar which are circular. With a tutorial, i have made a classic rectangular bar, which is full red when you have 100% of life and which decrease in a collision.

But, I would want to make a circular HealthBar, wich differents parameters of win and lose. So, my circle shoud start at center, and increase radius color when you lose point.

Thank you for helping me !