An emf is induced in a conducting loop of wire 1.26 m long as its shape is changed from square to circular. Find the average magnitude of the induced...

An emf is induced in a conducting loop of wire 1.26 m long as its shape is changed from square to circular. Find the average magnitude of the induced emf if the change in shape occurs in 4.07 s, and the local 0.108 T magnetic field is perpendicular to the plane of the loop.