A circular coil of 150 turns is made of flexible wire. The cross-sectional area of the coil is 200cm^2. It is placed in a uniform B field of 0.600T (B field into page). The plane of the coil is perpendicular to the B field. What is the magnitude of the average emf induced in the coil:(i) If the coil shrinks to an area of 50cm^2 in 0.300s?