How do you find volume of eclipse?

Answer 1

An eclipse is usually an astronomical phenomenon whereby one object comes between the observer and another object, or casts its shadow so as to conceal another object. For example, a solar eclipse occurs when the moon comes between the observer and the sun. There is no volume to be measured in these circumstances.

One possible alternative is that you meant an ellipse. But even that does not work because an ellipse is a 2-dimensional shape and 2-d shapes do not have volumes.