Recall that sound level b, in decibels, is defined by the equation b = 10(log10(l/10^-12)), where l is the sound intensity in watts per square meter.
(a) Determine the intensity of a radio with a sound level of 52 dB to the nearest thousandth.
(b) To the nearest tenth, what is the sound level of the radio if its intensity is increased by a factor of 25?