Problem: A square loop of wire consisting of a single turn is perpendicular to a uniform magnetic field. The square loop is then re-formed into a circular loop, which also consists of a single turn and is also perpendicular to the same magnetic field. The magnetic flux that passes through the square loop is 5.8 x 10^-3 Wb.

Part A: What is the flux that passes through the circular loop?

______________________Wb

I need help to find the flux that passes through the circular loop.