AB=8 AC=2 V-?

It seems like you're asking for the value of \( V \) in a geometric context, possibly a volume or variable related to triangles or three-dimensional figures involving points \( A \), \( B \), and \( C \). However, the information provided is insufficient to determine what \( V \) represents or how to compute it.

If you could clarify the mathematical context or provide additional information (such as whether \( A, B, C \) are points on a shape, what kind of geometric figure you are dealing with — like a triangle, pyramid, etc. — and what \( V \) is supposed to represent), I would be more than happy to assist you further!