Hello . i want to calculate an area of a changing circle in fortran but i do not have any clue on how i can start .
irrelavant on the programing language can you please tell me a better way to calculate the area of a varying circle . thanks very much .
i was thinking making a rectangle around the circle and calculating its .area

 

Do you know the diameter of the circle as it changes?

 

Do you know the diameter of the circle as it changes?

...or radius, or circumference, or anything? What is changing and how do you know it changed?
Are you asking about the entire circle or some pie-shaped portion of it?