A long solenoid has a diameter of 10.4cm. When a current I exists in its windings, a uniform magnetic field of magnitude B=37.7 mT is produced in its interior. By decreasing I, the field is causes to decrease at the rate of 7.23 mT/s. Calculate the magnitude of the induced field (a) 3.75cm and (b) 8.58cm from the axis of the solenoid.