physics question on faradays and lenz laws

Question

A 10-turn square coil of area 0.036 m2 and a 20-turn circular coil are both placed perpendicular to the same changing magnetic field. The voltage induced in each of the coils is the same. What is the area of the circular coil?

Answer 1

e = NAdB/dt = 10(.036)dB/dt = 20AdB/dt ... thus A = .36/20= .018m²